Earphone

Abstract

The earphone comprises a sound production part, an abutting part and an ear hook, the ear hook is connected with the sound production part and the abutting part, in a wearing state, the sound production part and the abutting part form a clamping state on the two sides of a helix of a user, the sound production part is located in an auricular conchae cavity, the sound production part comprises a first shell and a sound production assembly, and the sound production assembly is used for forming a first containing cavity; the sound production assembly is arranged in the first containing cavity, a sound outlet hole is formed in the first shell, sound produced by the sound production assembly is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape and is provided with a first end and a second end which are arranged at intervals in the length direction of the sound outlet hole, and in the wearing state, the first end is arranged towards the earhole, and the second end is arranged towards the earhole. And the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the auricular conchae cavity is smaller than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the auricular conchae cavity. In this way, the sound quality of the earphone can be improved.

Description

[0001] This application is based on Chinese patent application with application number CN202311701969.7 and application date December 11, 2023, Chinese patent application with application number CN2024101723779 and application date February 6, 2024, PCT international application with application number PCT / CN2024 / 076495 and application date February 6, 2024, PCT international application with application number PCT / CN2024 / 076377 and application date February 6, 2024. Application, PCT international application with application number PCT / CN2024 / 076378 and application date February 6, 2024, PCT international application with application number PCT / CN2024 / 076388 and application date February 6, 2024, PCT international application with application number PCT / CN2024 / 076389 and application date February 6, 2024, and claim priority of the above seven patent applications, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of electronic equipment, and in particular to a headset. Background Art

[0003] Headphones have been widely used in people's daily life. They can be used with mobile phones, computers and other electronic devices to provide users with sound playback functions. Among them, ear clip headphones are a new type of headphones. They are usually small in size and can be clamped on the wearer's ear helix for use. Moreover, the ear clip headphones do not block the ear canal, which not only ensures the safety of outdoor scenes, but also is more comfortable to wear than in-ear headphones.

[0004] However, the sound quality of current ear clip headphones is difficult to meet the demand. Summary of the invention

[0005] The present application provides an earphone, which includes a sound-emitting part, an abutment part and an ear hook, wherein the ear hook connects the sound-emitting part and the abutment part, the sound-emitting part is used to convert an electrical signal into an acoustic signal and play it, a battery is arranged in the abutment part, and in a worn state, the sound-emitting part and the abutment part form a clamping state on both sides of the user's auricle, and the sound-emitting part is located in the concha cavity, the sound-emitting part includes a first shell and a sound-emitting component, which is used to form a first accommodating cavity, the sound-emitting component is arranged in the first accommodating cavity, a sound outlet hole is arranged on the first shell, and the sound generated by the sound-emitting component is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape, and has a first end and a second end arranged at intervals along the length direction of the sound outlet hole, in a worn state, the first end is arranged toward the ear hole, and the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the concha cavity is smaller than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the concha cavity.

[0006] In some embodiments, at the second end and / or at a side of the second end away from the first end, the outer wall surface of the first shell and the inner wall surface of the concha cavity are in contact with each other.

[0007] In some embodiments, the outer wall of the first shell is arranged so that the long side hole of the sound outlet is arranged in an arc shape, and the distance between the outer wall of the first shell and the inner wall of the concha cavity gradually increases in the direction from the second end to the first end.

[0008] In some embodiments, the arc-to-chord ratio of the long side hole edge of the sound outlet hole is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.05.

[0009] In some embodiments, the width-to-length ratio of the sound outlet hole is between 0.15 and 0.30.

[0010] In some embodiments, the length of the sound outlet hole is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm.

[0011] In some embodiments, when the sound-emitting portion and the abutting portion are placed on a horizontal reference plane at the same time, the long side hole of the sound outlet hole forms a first reference point with the horizontal reference plane between the first end and the second end, the second end is located on the side of the first reference point toward the abutting portion, and the first end is located on the side of the first reference point away from the abutting portion.

[0012] In some embodiments, the length of the long side hole of the sound outlet hole between the first end and the first reference point is between 2 and 5.5 mm, and the length of the long side hole of the sound outlet hole between the second end and the first reference point is between 4.5 and 8 mm.

[0013] In some embodiments, the arc-chord ratio of the long side hole of the sound outlet hole between the first end and the first reference point is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02; the arc-chord ratio of the long side hole of the sound outlet hole between the second end and the first reference point is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.07.

[0014] In some embodiments, the long side hole edge of the sound outlet hole has a first normal direction at the first reference point, the long side hole edge of the sound outlet hole has a second normal direction at the first end, and the long side hole edge of the sound outlet hole has a third normal direction at the second end, and the angle between the first normal direction and the second normal direction is between 30° and 42°, or greater than or equal to 15° and less than 30°; the angle between the first normal direction and the third normal direction is between 50° and 60°, or greater than or equal to 25° and less than 50°.

[0015] In some embodiments, the sound outlet hole has a central dividing line disposed along its length direction. The sound outlet hole intersects with a reference cross-section disposed along the length direction of the ear hook, and the angle between the plane where the central dividing line is located and the reference cross-section is between 0° and 45°, and the sound outlet hole is offset toward the earlobe direction.

[0016] In some embodiments, the plane where the central dividing line is located coincides with the reference cross-section; or, the sound outlet hole is mirror-symmetrical with respect to the reference cross-section.

[0017] In some embodiments, on the reference cross-section, the sound generating part has a second reference point closest to the abutting part, and the inner contour of the ear hook has a third reference point farthest from the second reference point in the area close to the helix edge in the wearing state. The sound outlet hole is located on the side where the second reference point is away from the third reference point, and on the outer wall surface of the sound generating part, the distance from the second end to the second reference point is between 2.2 mm and 4.2 mm, and the distance from the first end to the second reference point is between 9 mm and 12.4 mm.

[0018] In some embodiments, the sound generating part is further provided with a pressure relief hole, the pressure relief hole is oriented toward the helix, and the pressure relief hole intersects with the reference cross-section or the pressure relief hole is mirror-symmetrical with respect to the reference cross-section.

[0019] In some embodiments, the pressure relief hole and the sound outlet hole are spaced apart from each other by the contact area between the sound generating part and the concha.

[0020] In some embodiments, the number of the pressure relief holes is one, and it is strip-shaped. The reference cross-section is disposed along the width direction of the pressure relief hole and intersects with the pressure relief hole.

[0021] In some embodiments, the number of the pressure relief holes is two, which are respectively disposed on both sides of the reference cross-section and are mirror-symmetrical with respect to the reference cross-section. The reference cross-section is disposed along the width direction of the pressure relief hole.

[0022] In some embodiments, the pressure relief hole includes a first hole portion and a second hole portion along the length direction of the pressure relief hole, and a third hole portion connecting the first hole portion and the second hole portion, wherein the width of at least part of the first hole portion and the second hole portion is greater than the width of the third hole portion.

[0023] In some embodiments, the sound generating assembly is provided with a sound guiding hole communicating with the pressure relief hole through the first accommodation space. The distance between the sound guiding hole and the pressure relief hole is not greater than 0.5 mm, or greater than 0.5 mm and less than or equal to 4 mm.

[0024] In some embodiments, the earphone further includes a microphone. An incoming sound hole for guiding external sound to the microphone is provided on the first housing, and the incoming sound hole intersects with the reference cross-section.

[0025] In some embodiments, the sound - generating component includes two speakers. Each speaker includes a diaphragm. The two speakers are assembled and cooperated with each other along the axial direction to form a first acoustic cavity between the two speakers. The sound - generating component is provided with a first sound - guiding hole that communicates the sound outlet hole and the first acoustic cavity. The sound outlet hole and the first sound - guiding hole communicate with each other along the radial direction of the sound - generating component. The first sound - guiding hole is further arranged in a strip shape, and the length directions of the sound outlet hole and the first sound - guiding hole are arranged along the circumferential direction of the sound - generating component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic diagram of the wearing state of the earphone embodiment of the present application worn on a human ear;

[0027] Figure 2 is Figure 1 a front - view structural schematic diagram of the earphone shown;

[0028] Figure 3 is Figure 1 a three - dimensional structural schematic diagram of the earphone shown;

[0029] Figure 4 is Figure 1 a top - view structural schematic diagram of the earphone shown;

[0030] Figure 5 is Figure 1 a three - dimensional structural schematic diagram of the sound - generating part of the earphone shown;

[0031] Figure 6 is Figure 5 a front - view structural schematic diagram of the sound - generating part shown;

[0032] Figure 7 is Figure 6 a cross - sectional structural schematic diagram of the sound - generating part shown along the cutting line A - A;

[0033] Figure 8 is Figure 6 another cross - sectional structural schematic diagram of the sound - generating part shown along the cutting line A - A;

[0034] Figure 9 is Figure 5 a top - view structural schematic diagram of the sound - generating part shown;

[0035] Figure 10 is Figure 8 a side - view structural schematic diagram of the sound - generating component of the sound - generating part shown;

[0036] Figure 11 is Figure 10 a cross - sectional structural schematic diagram of the sound - generating component shown along the cutting line P - P;

[0037] Figure 12 is Figure 8 an exploded schematic diagram of the sound - generating component shown;

[0038] Figure 13 is Figure 8 A three-dimensional structural schematic diagram of another exemplary sound generating component of the sound generating part shown;

[0039] Figure 14 is Figure 11 An enlarged schematic diagram of a partial area Q of the sound generating component shown;

[0040] Figure 15 is Figure 5 A side view structural schematic diagram of the sound generating part shown;

[0041] Figure 16 is Figure 15 A cross-sectional structural schematic diagram of the sound generating part shown along the cutting line J - J;

[0042] Figure 17 is Figure 16 A top view structural schematic diagram of the sound generating component of the sound generating part shown;

[0043] Figure 18 is Figure 8 A side view structural schematic diagram of the other side of the sound generating component of the sound generating part shown;

[0044] Figure 19 is Figure 5 An exploded structural schematic diagram of the sound generating part shown;

[0045] Figure 20 is Figure 5 Another exploded structural schematic diagram of the sound generating part shown;

[0046] Figure 21 is Figure 15 A cross-sectional structural schematic diagram of the sound generating part shown along the cutting line U - U;

[0047] Figure 22 is Figure 15 Another structural schematic diagram of the pressure relief hole of the sound generating part shown;

[0048] Figure 23 is Figure 5 Another exploded structural schematic diagram of the sound generating part shown;

[0049] Figure 24 is Figure 4 A cross-sectional structural schematic diagram of the earphone shown along the cutting line V - V;

[0050] Figure 25 is Figure 24 A contour schematic diagram of a cross-section corresponding to the cutting line V - V shown;

[0051] Figure 26 is Figure 1Schematic diagram of the three-dimensional structure of the earphone in the pre-tightening force state;

[0052] Figure 27 is Figure 26 Schematic diagram of the change in the clamping force of the earphone shown;

[0053] Figure 28 is Figure 26 Schematic diagram of the structure for measuring the pre-tightening force of the earphone shown through a thin-film pressure sensor;

[0054] Figure 29 is Figure 26 Schematic diagram of the structure of a measuring device for the clamping force / pre-tightening force of the earphone shown;

[0055] Figure 30 is Figure 26 Schematic diagram of the structure of another measuring device for the clamping force / pre-tightening force of the earphone shown;

[0056] Figure 31 is Figure 1 Schematic diagram of the structure of the earphone shown with a magnetic coupling matching structure;

[0057] Figure 32 is Figure 31 Schematic diagram of the change in the clamping force of the earphone shown;

[0058] Figure 33 is Figure 31 Schematic diagram of the change in the clamping force of the earphone described in the state with pre-tightening force;

[0059] Figure 34 is Figure 2 Schematic diagram of the cross-sectional structure of the earphone shown along the cutting line I - I;

[0060] Figure 35 is Figure 24 Another contour schematic diagram of the cross-section corresponding to the cutting line V - V shown;

[0061] Figure 36 is Figure 1 Another schematic diagram of the structure of the earphone shown. Detailed implementation method

[0062] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0063] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0064] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0065] like Figure 1 As shown, the user's ear EAR may include the external auditory canal E11, the cavum concha E12, the cymba concha E13, the triangular fossa E14, the antihelix E15, the scaphoid E16, the helix E17 and the antitragus E18. Among them, although the external auditory canal 101 has a certain depth and extends to the eardrum of the ear EAR, for the convenience of description, and in combination with Figure 1 As shown, in the present application, unless otherwise specified, the external auditory canal E01 specifically refers to its entrance away from the tympanic membrane (i.e., the ear hole). Furthermore, the concha cavity E12, the hymena concha E13, the triangular fossa E14 and other physiological parts have a certain volume and depth; and the concha cavity E12 is directly connected to the external auditory canal E11, that is, the ear hole can be simply regarded as being located at the bottom of the concha cavity E12.

[0066] Further, there is also a tragus E19 on the periphery of the external auditory canal of the ear EAR. Compared with parts such as the concha cavity E12, the cymba conchae E13, and the triangular fossa E14, these parts have a certain depth and volume in three-dimensional space, that is, these parts are recessed backward along the direction close to the user's head towards the back side of the ear EAR, while the tragus E19 protrudes forward along the direction away from the user's head towards the front side of the ear EAR. Among them, "the front side of the ear EAR" is a concept relative to "the back side of the ear EAR". The former refers to the side of the ear EAR away from the head, for example Figure 1 , and the latter refers to the side of the ear EAR towards the head. Both are with respect to the user's ear EAR.

[0067] Further, different users may have individual differences, resulting in different sizes such as shapes and sizes of the ear EAR. For the convenience of description and to reduce (or even eliminate) the individual differences of different users, a simulator including the head and its (left and right) ears EAR can be made based on the ANSI:S3.36, S3.25, and IEC:603187 standards, such as GRAS45BCKEMAR. Therefore, descriptions such as "the user wears the earphone", "the earphone is in a worn state", and "in the worn state" can refer to the earphone described in this application being worn on the ear EAR of the aforementioned simulator. Of course, precisely because different users have individual differences, there may be certain differences when the earphone is worn by different users compared to when the earphone is worn on the ear EAR of the aforementioned simulator, but such differences should be tolerated.

[0068] This embodiment of the application describes at least one exemplary structure of the earphone 1. As Figure 1 shown, Figure 1 shows the state of the earphone 1 worn on the user's ear EAR. The earphone 1 can be a clip-on earphone. As Figures 1 to 4 shown, the earphone 1 includes a sound generating part 100 for inserting into the concha cavity E12 of the user (user), a contact part 400 for abutting against the back of the user's ear, and an ear hook 300 connecting the sound generating part 100 and the contact part 400. The ear hook 200 can bypass the user's helix 17, and the sound generating part 100 and the contact part 400 form a clamping state on both sides of the user's helix. The sound generating part 100 is a sound playback device, which is used to convert an electrical signal into a sound signal and play it to the wearer. The contact part 400 forms a clamping state with the sound generating part 100 to clamp and wear the entire earphone 1 on the user's helix. In some embodiments, devices such as a battery and a circuit board can be arranged in the contact part 400. Of course, the contact part 400 can also be used without a battery, and the battery can be installed in the sound generating part 100.

[0069] In some embodiments, as Figure 5 and Figure 6As shown, the sound - generating part 100 may be provided with a sound - output hole 111 and a pressure - relief hole 112. The sound - output hole 111 may be located at the bottom of the sound - generating part 100, and the pressure - relief hole 112 may be located on the side of the sound - generating part 100 close to the earhook 300. As Figure 7 As shown, the sound - generating part 100 includes a first housing 10 and a sound - generating component 20. The first housing 10 is used to form a first accommodation cavity 110, and the sound - generating component 20 is disposed in the first accommodation cavity 110.

[0070] As Figure 7 As shown, the sound - generating component 20 includes two speakers 21. Each speaker 21 includes a diaphragm 22. The two speakers 21 are assembled and cooperated with each other along the axial direction (i.e., the direction of the axis Z) to form a first acoustic cavity 201 between the two speakers 21. The sound - generating component 20 and the first housing 10 cooperate with each other to form a second acoustic cavity 202 that is isolated from the first acoustic cavity 201 between the sound - generating component 20 and the first housing 10. The first housing 10 is provided with a sound - output hole 111 communicating with the first acoustic cavity 201 and a pressure - relief hole 112 communicating with the second acoustic cavity 202. The sound generated on one side of the diaphragms 22 of the two speakers 21 is output through the first acoustic cavity 201 and the sound - output hole 111, and the sound generated on the other side of the diaphragms 22 of the two speakers 21 is output through the second acoustic cavity 202 and the pressure - relief hole 112. Among them, the axial direction may be the direction indicated by the central axis Z of the sound - generating component 20. The central axis Z may, for example, pass through the geometric center of the sound - generating component 20 and the geometric centers of the diaphragms 22 of the two speakers 21. The central axis Z may also be the central axis of the magnetic circuits of the two speakers 21.

[0071] For the speaker 21 used to generate sound, the sound pressure level is an important parameter to measure its performance. The sound pressure level is usually used to compare the sound pressure levels emitted by different sound sources and is used to quantify and compare the intensity of sounds. The sound pressure level is a measure used to describe the size of a sound. It represents the logarithm of the ratio of the effective value of the sound pressure to its reference value. The specific formula is as follows:

[0072]

[0073] Among them, SPL is the sound pressure level, P is the sound pressure generated when the speaker 21 is working, and Pref is the reference sound pressure. When the sound - generating component 20 is only provided with a single speaker 21, the sound pressure generated when it is working is P. Under the same conditions, when two speakers 21 are provided in the sound - generating component 20, the sound pressure generated when it is working is 2P. Then, according to the above formula, the difference in the sound pressure level between a single speaker 21 and two speakers 21 can be calculated as follows:

[0074]

[0075] As can be seen from the above derivation, compared with only setting one speaker 21, by assembling and cooperating along the axial direction (i.e., the direction of axis Z) within the sound generating component 20 and forming a first acoustic cavity 201 between the two speakers to generate sound, the sound pressure level of the sound generating component 20 can be effectively improved, thereby achieving a better volume effect, enabling the user to hear clearer sounds, and effectively improving the sound quality of the earphone 1.

[0076] In addition, through the assembly and cooperation of the two speakers 21, the diaphragms 22 of the two speakers 21 can face each other to form a first acoustic cavity 201. The first acoustic cavity 201 is a place where the diaphragm 22 vibrates to push air to generate sound waves for the user to listen to. The second acoustic cavity 202 communicates with the pressure relief hole 112 and then communicates with the outside world, and is used to balance the air pressure inside the first housing 10. The two speakers 21 can be assembled and cooperated to form the first acoustic cavity 201. After the two speakers 21 are assembled, they are integrally assembled in the first housing 10, which can simplify the structure and the assembly is simple. Moreover, by using the second acoustic cavity 202 formed between the sound generating component 20 and the first housing 10 and isolated from the first acoustic cavity 201, there is no need to form the second acoustic cavity 202 through additional structures or devices, which can also simplify the structure, reduce the assembly difficulty of the earphone 1, and improve the assembly efficiency of the earphone 1.

[0077] Optionally, the two speakers 21 of the sound generating component 20 have the same acoustic characteristics and are coaxially arranged along the axial direction (i.e., the direction of axis Z). Among them, the same acoustic characteristics of the two speakers 21 means that under the drive of the same drive signal, the sound pressures generated by the two speakers 21 are the same or close. Specifically, the ratio of the difference in sound pressure between the two to the minimum sound pressure is not greater than 10%. By setting two speakers 21 with the same acoustic characteristics and coaxially arranging them along the axial direction (i.e., the direction of axis Z), it is beneficial to improve the sound quality of the sound generating component 20.

[0078] Optionally, as Figure 7 shown, the sound generating component 20 further includes a mounting bracket 27. The mounting bracket 27 is annularly arranged. The two speakers 21 are respectively assembled and cooperated with both ends of the mounting bracket 27 to form a first acoustic cavity 201. A first sound guiding hole 203 communicating the sound outlet hole 111 and the first acoustic cavity 201 is provided on the mounting bracket 27.

[0079] By setting the annular mounting bracket 27, while realizing the assembly and cooperation of the two speakers 21, the first acoustic cavity 201 is formed, and the first sound guiding hole 203 is provided on the mounting bracket 27 to realize the communication between the sound outlet hole 111 and the first acoustic cavity 201, so as to realize the transmission of the sound waves in the first acoustic cavity 201 to the user's ear EAR through the first sound guiding hole 203 and the sound outlet hole 111 in sequence, effectively simplifying the structure, effectively improving the structural compactness and integration of the sound generating component 20, being beneficial to reducing the assembly difficulty, and being beneficial to improving the assembly efficiency.

[0080] Optionally, in some embodiments, as Figure 7 shown, the two speakers 21 respectively include a voice coil 23, a magnetic circuit system 24, and a speaker frame 25. The speaker frame 25 is used to support the diaphragm 22 and the magnetic circuit system 24. The voice coil 23 is connected to the diaphragm 22 and is disposed within the magnetic field formed by the magnetic circuit system 24. The speaker frames 25 of the two speakers 21 are respectively assembled and cooperated with the mounting bracket 27, so that a first acoustic cavity 201 is formed between the diaphragms 22 of the two speakers 21 and the mounting bracket 27. Among them, the voice coil 23 can be cylindrical, and the axis of the voice coil 23 can be the central axis Z of the sound generating assembly 20. The voice coil 23 moves in the axial direction (i.e., the direction of the axis Z) under the action of the magnetic field formed by the magnetic circuit system 24 to drive the diaphragm 22 to vibrate and generate sound waves.

[0081] By assembling and cooperating the speaker frames 25 of the two speakers 21 with the mounting bracket 27 to realize the assembly of the sound generating assembly 20, and setting the speaker frame 25 to support the diaphragm 22 and the magnetic circuit system 24, the structure is simple and compact, effectively reducing the assembly difficulty and effectively improving the assembly efficiency.

[0082] Figure 7 Shown is the assembly and cooperation of the speaker frames 25 of the two speakers 21 and the mounting bracket 27. Optionally, in some embodiments, the mounting bracket 27 can also be cancelled, and the speaker frames 25 of the two speakers 21 can be assembled and cooperated with each other to form a first acoustic cavity 201. In this case, a first sound guiding hole 203 communicating the sound outlet hole 111 and the first acoustic cavity 201 is provided on the speaker frame 25 of at least one of the two speakers 21. For example, the two speaker frames 25 can both be provided with the sound outlet hole 111, or each is provided with a part of the sound outlet hole 111, and a complete sound outlet hole 111 is formed after assembly. Through the assembly and cooperation between the two speaker frames 25, the assembly and cooperation of the two speakers 21 and the formation of the first acoustic cavity 201 are realized, without additionally setting connecting components, while simplifying the structure and reducing the production cost, which is beneficial to reducing the assembly difficulty and improving the assembly efficiency.

[0083] Optionally, as Figure 7 shown, the sides of the diaphragms 22 of the two speakers 21 facing away from their respective magnetic circuit systems 24 are arranged adjacent to each other, and the first acoustic cavity 201 is formed between the diaphragms 22 of the two speakers 21.

[0084] The diaphragms 22 of the two speakers 21 are driven by their respective voice coils 23 to vibrate, so as to generate sound waves for users to listen to on the side facing away from their respective magnetic circuit systems 24. By arranging the sides of the diaphragms 22 of the two speakers 21 facing away from their respective magnetic circuit systems 24 adjacent to each other, both speakers 21 generate sound waves in the first acoustic cavity 201. While effectively simplifying the structure of the sound generating component 20, it is convenient to reduce the volume of the first acoustic cavity 201, making the structure of the sound generating component 20 more compact, which is beneficial to reducing the volume of the earphone 1 and improving the wearing comfort of the earphone 1. In addition, the two speakers 21 sharing the first acoustic cavity 201 can also move the resonance peak of the first acoustic cavity 201 towards the high frequency, which is beneficial to improving the sound quality of the earphone 1.

[0085] As Figure 7 shown, second sound guiding holes 204 are respectively arranged on the speaker frames 25 of the two speakers 21, and the second sound guiding holes 204 communicate the sides of the corresponding diaphragms 22 facing their respective magnetic circuit systems 24 with the second acoustic cavity 202.

[0086] The sides of the diaphragms 22 of the two speakers 21 facing their respective magnetic circuit systems 24 are communicated with the second acoustic cavity 202 through the second sound guiding holes 204, and then communicated with the outside through the pressure relief holes 112 to balance the air pressure inside the first housing 10. While ensuring the sound quality, it is beneficial to simplify the structure of the sound generating component 20 and facilitate assembly.

[0087] Optionally, in some embodiments, as Figure 7 shown, the sides of the diaphragms 22 of the two speakers 21 facing their respective magnetic circuit systems 24 share the second acoustic cavity 202 and the pressure relief holes 112. Such an arrangement can reduce the number of the pressure relief holes 112, improve the aesthetics of the earphone 1, and is beneficial to ensuring the consistency of the acoustic characteristics of the two speakers 21, which is beneficial to improving the sound quality of the sound generating component 20. In addition, the two speakers 21 sharing the second acoustic cavity 202 is also convenient for sealing, and can reduce the volume of the first housing 10, making the structure of the earphone 1 more compact, effectively reducing the volume of the earphone 1, and being beneficial to improving the wearing comfort of the earphone 1.

[0088] Optionally, in some other embodiments, as Figure 8As shown, the second acoustic cavity 202 includes two sub-acoustic cavities 202a isolated from each other. The first housing 10 is provided with pressure relief holes 112 respectively communicating with each sub-acoustic cavity 202a. The diaphragms 22 of the two speakers 21 communicate with the corresponding sub-acoustic cavities 202a and pressure relief holes 112 respectively on the sides facing their respective magnetic circuit systems 24. By isolating the two sub-acoustic cavities 202a, the sound signals of the two speakers 21 can be made not completely the same, that is, the earphone 1 has a certain frequency division function to adapt to different listening environments and sound quality requirements. Moreover, the two isolated sub-acoustic cavities 202a can reduce the mutual interference between the two speakers 21, thereby improving the effectiveness and reliability of the operation of the two speakers 21, which is beneficial to improving the sound quality of the earphone 1.

[0089] Optionally, as Figure 9 and Figure 10 shown, the sound outlet hole 111 and the first sound guiding hole 203 communicate with each other along the radial direction RD of the sound generating component 20. The sound outlet hole 111 and the first sound guiding hole 203 are respectively arranged in a strip shape, and the length directions of the sound outlet hole 111 and the first sound guiding hole 203 are arranged along the circumferential direction of the sound generating component 20. Among them, the radial direction RD of the sound generating component 20 is the direction perpendicular to the axis direction (i.e., the direction of the axis Z), and the circumferential direction of the sound generating component 20 is the direction surrounding the axis direction (i.e., the direction of the axis Z).

[0090] By setting the sound outlet hole 111 and the first sound guiding hole 203 in a strip shape and making the length directions of the sound outlet hole 111 and the first sound guiding hole 203 along the circumferential direction of the sound generating component 20, while ensuring the areas of the sound outlet hole 111 and the first sound guiding hole 203, the lengths of the sound outlet hole 111 and the first sound guiding hole 203 in the axis direction (i.e., the direction of the axis Z) are reduced, the structural compactness of the sound generating component 20 is improved, the volume of the earphone 1 is reduced, and the wearing comfort of the earphone 1 is improved.

[0091] In this application, the description of a certain physical / mathematical quantity (such as distance, ratio, area, length, width, thickness, etc.) being between a certain numerical range may include the endpoint values of the numerical range. For example, if a certain distance is between A and B, the value of this distance can be A, or B, or a value between A and B. Therefore, the descriptions involving "between" numerical ranges in the following content are understood and applied according to the above expressions.

[0092] Optionally, as Figure 11As shown, the distance Z22 between the mounting edges of the diaphragms 22 of the two speakers 21 in the axial direction (i.e., the direction of the axis Z) is between 1.6 and 2.5 mm. For example, it can be 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, etc. Of course, it can also be other values. The mounting edge of the diaphragm 22 is the edge mounted on the chassis 25. The radial dimension R21 of the first acoustic cavity 201 is between 7.5 and 9.5 mm. For example, it can be 7.8 mm, 8.1 mm, 8.5 mm, 8.8 mm, 9.1 mm, etc. Of course, it can also be other values. Optionally, the areas of the sound outlet hole 111 and the first sound guiding hole 203 can be between 5 and 18 mm 2 . Optionally, the areas of the sound outlet hole 111 and the first sound guiding hole 203 can be between 9 and 20 mm 2 . For example, the areas of the sound outlet hole 111 and the first sound guiding hole 203 can be 6 mm 2 , 8 mm 2 , 9 mm 2 , 10 mm 2 , 12 mm 2 , 14 mm 2 , 17 mm 2 , 19 mm 2 etc. Of course, it can also be other values. By reasonably setting the above dimensions, while improving the structural compactness of the sound generating component 20, the resonance peak of the first acoustic cavity 201 can be shifted to a higher frequency, which is beneficial to improving the sound quality of the earphone 1.

[0093] Optionally, as Figure 11 shown, the ends of the magnetic circuit systems 24 facing away from their respective diaphragms 22 protrude from the chassis 25, and the radial dimension R22 of the protruding part of the magnetic circuit systems 24 relative to the chassis 25 is smaller than the radial dimension R23 of the supporting position of the chassis 25 for the diaphragm 22. Such a setting can make the outer contour of the sound generating component 20 closer to a spherical shape, which is convenient for improving the structural compactness and integration, and effectively reducing the volume of the sound generating component 20. And the first accommodating cavity 110 can be set to be approximately spherical to match the appearance of the earphone 1. Thus, setting the sound generating component 20 in this way is convenient for assembling the sound generating component 20 into the first accommodating cavity 110, effectively improving the space utilization rate of the first accommodating cavity 110 and the assembly efficiency of the earphone 1. In addition, by setting the outer contour of the sound generating component 20 to be closer to a spherical shape, it can be better adapted to the shape of the concha cavity E12, and then the space in the concha cavity E12 can be fully utilized, effectively improving the space utilization rate in the concha cavity E12.

[0094] Optionally, as Figure 11As shown, the ratio of the axial dimension Z21 of the sound - generating component 20 to the radial dimension R23 of the supporting position of the diaphragm 22 by the chassis 25 is between 0.8 and 1.3. For example, this ratio can be 0.9, 1, 1.1, etc. Optionally, the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sound - generating component 20 is between 0.8 and 1.3 mm. This ratio can be 0.9, 1, 1.1, etc. In this way, the axial dimension Z21 of the sound - generating component 20 and the radial dimension R23 of the supporting position of the diaphragm 22 by the chassis 25 are very close, making the outer contour of the sound - generating component 20 closer to a spherical shape, facilitating better cooperation with the approximately spherical first accommodation cavity 110, effectively improving the space utilization rate of the first accommodation cavity 110, effectively reducing the assembly difficulty and improving the assembly efficiency. For example, if the axial dimension Z21 of the sound - generating component 20 is 9.5 mm and the radial dimension R23 of the supporting position of the diaphragm 22 by the chassis 25 is 8.1 mm, then the ratio between the two is approximately 1.17. Another example, if the axial dimension Z21 of the sound - generating component 20 is 9.5 mm and the radial dimension R23 of the supporting position of the diaphragm 22 by the chassis 25 is 8.8 mm, then the ratio between the two is approximately 1.08.

[0095] Optionally, in some embodiments, as Figure 11 and Figure 12 shown, the sound - generating component 20 is provided with a mounting boss 271, the first sound - guiding hole 203 is arranged on the mounting boss 271, and the mounting boss 271 abuts against the first housing 10 around the sound - output hole 111 (as Figure 7 shown), so that the first sound - guiding hole 203, the sound - output hole 111 and the second acoustic cavity 202 are isolated from each other. Of course, in some other embodiments, the mounting boss 271 is also arranged on the first housing 10 instead of on the sound - generating component 20. Specifically, the first housing 10 is provided with a mounting boss 271, the sound - output hole 111 is arranged on the mounting boss 271, and the mounting boss 271 abuts against the sound - generating component 20 around the first sound - guiding hole 203, so that the first sound - guiding hole 203, the sound - output hole 111 and the second acoustic cavity 202 are isolated from each other.

[0096] By providing the mounting boss 271, while realizing the connection between the first housing 10 and the sound - generating component 20, the first sound - guiding hole 203 and the sound - output hole 111 are isolated from the second acoustic cavity 202. While simplifying the structure, the isolation effect is improved, avoiding the influence of the sound output from the first sound - guiding hole 203 and the sound - output hole 111 being affected by the pressure relief of the second acoustic cavity 202 through the pressure - relief hole 112, and improving the sound quality of the earphone 1.

[0097] Optionally, as Figure 11 and Figure 12As shown, the sound generating assembly 20 further includes a mounting bracket 27, and a mounting boss 271 is located on the mounting bracket 27. The mounting bracket 27 further includes a bracket body 272 that is connected to the mounting boss 271 along the circumferential direction of the sound generating assembly 20 and is arranged in an annular segment shape. Two first support surfaces 2701 that face away from each other in the axial direction (i.e., the direction of axis Z) are provided on the bracket body 272. The outer end faces 250 of the two speaker frames 25 close to their respective diaphragms 22 are respectively supported on the corresponding first support surfaces 2701. The mounting boss 271 protrudes from the bracket body 272 in both the axial direction (i.e., the direction of axis Z) and the radial direction RD of the sound generating assembly 20, and is arranged outside the outer peripheral surfaces of the two speaker frames 25. With such a setting, while ensuring the structural strength of the mounting boss 271, sufficient space can be reserved for the mounting boss 271 to provide the first sound guiding hole 203, and the two speaker frames 25 are respectively supported on the corresponding first support surfaces 2701, which can improve the structural stability, thereby effectively enhancing the stability and reliability of the overall structure of the sound generating assembly 20.

[0098] Optionally, as Figure 10 and Figure 12 shown, the mounting bracket 27 can be a plastic molded part, and the radial thickness R24 of the mounting boss 271 is between 0.2 and 0.7 mm. Optionally, the radial thickness R24 of the mounting boss 271 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, etc. Of course, it can also be other values. The mounting boss 271 includes a connecting bridge 2723 that is arranged along the width direction of the first sound guiding hole 203 and connects the long side hole edge 111c of the first sound guiding hole 203. The first sound guiding hole 203 is divided by the connecting bridge 2723 into at least two first sub-sound guiding holes that are spaced apart from each other along the length direction of the first sound guiding hole 203. The mounting bracket 27 can be, for example, injection molded, compression molded, etc. Of course, it can also be made by other molding methods. Of course, in some other embodiments, as Figure 13 shown, the connecting bridge 2723 can also not be provided on the mounting boss 271, so that a first sound guiding hole 203 with a larger area can be obtained. Relative to Figure 12 the example shown, Figure 13 the circumferential dimension of the first sound guiding hole 203 of

[0099] can be appropriately reduced to maintain the structural strength, but since the connecting bridge 2723 is cancelled, the area of the first sound guiding hole 203 can still be increased, thereby improving the sound quality. By reasonably setting the radial thickness R24 of the mounting boss 271, while ensuring the space of the first sound guiding hole 203, the radial dimension R20 of the sound generating assembly 20 is not excessively increased, thereby realizing the miniaturization of the overall earphone 1. The setting of the connecting bridge 2723 facilitates the molding of the mounting bracket 27 and effectively improves the connection strength of the mounting boss 271, thereby effectively improving the effectiveness and reliability of the operation of the sound generating assembly 20.

[0100] Optionally, in some embodiments, as Figure 11 and 12 shown, the bracket body 272 includes a support portion 2721 and a limiting portion 2722. The limiting portion 2722 is connected to the support portion 2721. The first support table surface 2701 is disposed on the support portion 2721. The limiting portion 2722 protrudes from the first support table surface 2701 along the axial direction (i.e., the direction of axis Z) and is embedded in the basin frame 25 to limit the basin frame 25 along the radial direction RD of the sound generating component 20.

[0101] Of course, in some other embodiments, the bracket body 272 may be provided with a recessed portion (not shown in the figure). In other words, the limiting portion 2722 is not protrudingly provided but recessedly provided, thereby forming a recessed portion. A part of the basin frame 25 is embedded in the recessed portion to limit the basin frame 25 along the radial direction RD of the sound generating component 20.

[0102] By providing the limiting portion 2722 or the recessed portion to limit the basin frame 25 in the radial direction RD of the sound generating component 20, the structure is simple and stable, which is convenient for assembly and disassembly. While effectively improving the structural stability of the sound generating component 20, the assembly efficiency is also improved.

[0103] Optionally, as Figure 11 and Figure 12 shown, a sealant 28 is respectively provided between the outer end surface 250 of the two basin frames 25 and the first support table surface 2701, and between the inner peripheral surface of the mounting boss 271 and the outer peripheral surfaces of the two basin frames 25. By providing the sealant 28 at the above positions, the isolation effect of the first acoustic cavity 201 can be effectively improved, thereby improving the sound quality of the earphone 1. Moreover, the sealant 28 has good elasticity. When assembling and connecting the mounting boss 271 and the first housing 10, the sealant 28 can undergo a certain amount of elastic deformation to make it more fitting, thereby improving the stability and sealing performance of the connection between the mounting boss 271 and the first housing 10, which is beneficial to improving the sound quality of the earphone 1.

[0104] Optionally, as Figure 11 and Figure 14 shown, the basin frame 25 is provided with a first chamfer 251 at the corner of the connection position between the outer peripheral surface near the limiting portion 2722 and the first support table surface 2701 to form a first glue receiving groove 252. The support portion 2721 is provided with a second chamfer 2702 at the corner of the connection position between the outer end surface 250 of the basin frame 25 and the outer peripheral surface of the basin frame 25 to form a second glue receiving groove 2703.

[0105] By setting the first chamfer 251 and the second chamfer 2702 to form a first glue storage groove 252 and a second glue storage groove 2703, the accommodation capacity of the sealant 28 can be effectively increased, while improving the sealing effect and isolation effect, effectively reducing the overflow of the glue, thereby effectively reducing the possibility of interference with other components, which is conducive to reducing the assembly difficulty.

[0106] Optionally, as Figure 11 shown, the mounting boss 271 is provided with a third chamfer 2704 at the corner near the outer peripheral surface of the two speaker frames 25 to form a third glue storage groove 2705. The setting of the third chamfer 2704 can further improve the glue storage capacity and the isolation effect of the first acoustic cavity 201. Optionally, the second chamfer 2702 and the third chamfer 2704 are connected to each other, so that the second glue storage groove 2703 formed by the second chamfer 2702 and the third glue storage groove 2705 formed by the third chamfer 2704 can communicate with each other, and then continuous coating can be carried out during gluing, effectively simplifying the process and improving the assembly efficiency.

[0107] Optionally, as Figure 11 and Figure 14 shown, the speaker frame 25 is further provided with a second support table surface 253. The second support table surface 253 is located inside the outer end surface 250 of the speaker frame 25 along the radial direction RD of the sound generating component 20, and is spaced from the outer end surface 250 of the speaker frame 25 along the axial direction (i.e., the direction of the axis Z). The mounting edge of the diaphragm 22 is supported on the second support table surface 253, and at least a part of the projection of the limiting portion 2722 along the axial direction (i.e., the direction of the axis Z) falls on the second support table surface 253.

[0108] By setting the second support table surface 253 to support the diaphragm 22, and the second support table surface 253 is located inside the outer end surface 250 of the speaker frame 25 along the radial direction RD of the sound generating component 20, it is beneficial to improve the connection stability of the diaphragm 22, thereby improving the reliability of the diaphragm 22 during operation. And the limiting portion 2722 is set such that at least a part of the projection along the axial direction (i.e., the direction of the axis Z) falls on the second support table surface 253, realizing the reasonable utilization of space, improving the space utilization rate, and being beneficial to increasing the size of the first acoustic cavity 201 in the radial direction RD of the sound generating component 20 while ensuring the connection stability, thereby being beneficial to improving the sound quality of the earphone 1.

[0109] Optionally, as Figures 15 to 17As shown, the number of the second sound guiding holes 204 is multiple and they are arranged at intervals along the circumferential direction of the sound generating component 20. A pad 26 is arranged on the chassis 25 and is located between two second sound guiding holes 204. The distance from some of the second sound guiding holes 204 to the pressure relief hole 112 is less than the distance from the pad 26 to the pressure relief hole 112. The pad 26 is used to receive an electrical signal so that the speaker 21 performs corresponding work. By arranging multiple second sound guiding holes 204 along the circumferential direction of the sound generating component 20, the acoustic path of the sound output through the pressure relief hole 112 can be shortened, which is beneficial to improving the utilization rate of the volume of the second acoustic cavity 202, beneficial to improving the pressure relief efficiency, and beneficial to the sound quality of the earphone 1. Figure 15 The cross-section corresponding to the cutting line U-U shown is the reference cross-section SF.

[0110] Optionally, the distance from some of the second sound guiding holes 204 to the pressure relief hole 112 is not greater than 0.5 mm. Further optionally, this distance is not greater than 0.3 mm. If the distance from the second sound guiding hole 204 to the pressure relief hole 112 is too large, it will cause a decrease in the pressure relief performance, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance from some of the second sound guiding holes 204 to the pressure relief hole 112, the pressure relief efficiency is effectively improved, which is beneficial to improving the sound quality of the earphone 1.

[0111] Optionally, as Figure 16 shown, the second sound guiding hole 204 closest to the pressure relief hole 112 and the pad 26 are arranged oppositely along the radial direction RD of the sound generating component 20. Such an arrangement can make the work of the pad 26 and the pressure relief work of the earphone 1 not interfere with each other, which is beneficial to improving the pressure relief performance of the earphone 1 and beneficial to improving the sound quality of the earphone 1.

[0112] As Figure 16 and Figure 17 shown, specifically, pads 26 and second sound guiding holes 204 are respectively arranged on two chassis 25 and are spaced from each other along the circumferential direction of the sound generating component 20. As Figure 12 and Figure 18 shown, each chassis 25 and the mounting bracket 27 are provided with limiting structures 200a, 200b that cooperate with each other. The limiting structures 200a, 200b are used to limit the chassis 25 and the mounting bracket 27 along the circumferential direction of the sound generating component 20. The limiting structures 200a, 200b of the two chassis 25 are arranged oppositely along the axial direction (i.e., the direction of the axis Z). Optionally, as Figure 17 and Figure 18 shown, the sound generating component 20 has a radial plane RF that is arranged along the axial direction (i.e., the direction of the axis Z) and passes through the limiting structures 200a, 200b. The pads 26 on each chassis 25 are arranged in a mirror image with respect to the radial plane RF, and the sound guiding holes on each chassis 25 are respectively arranged in mirror symmetry with respect to the radial plane RF.

[0113] The limiting structures 200a and 200b are used to limit the two basin frames 25 in the circumferential direction of the sound generating component 20, preventing the two speakers 21 from rotating relative to each other, and effectively improving the structural stability and reliability of the sound generating component 20. At the same time, by mirroring the pads 26 and the second sound guiding holes 204 on each basin frame 25 relative to the radial plane RF respectively, the directivities of the pads 26 and the second sound guiding holes 204 on the two basin frames 25 are made consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 in the first accommodation cavity 110, which is beneficial to improving the sound quality of the earphone 1. In addition, by designing the structures of the two basin frames 25 to have high consistency, the two speakers 21 can reuse the same basin frame 25 design, effectively reducing the material cost and production cost.

[0114] Optionally, the number of the limiting structures 200a and 200b is only one set. With this setting, while making the basin frame 25 mirror-symmetrical relative to the radial plane RF, when the two basin frames 25 are installed, the sides with the limiting structures 200a are installed opposite to each other. Then, the pads 26 on each basin frame 25 are also relatively arranged and located on the same side of the sound generating component 20, further making the directivities of the pads 26 on the two speakers 21 consistent, thereby improving the consistency of the acoustic characteristics of the two speakers 21 in the first accommodation cavity 110, which is beneficial to improving the sound quality of the earphone 1.

[0115] Optionally, in combination with Figure 7 , Figure 19 and Figure 20 , the first housing 10 may include a first rigid housing 11 and a second rigid housing 12. The first rigid housing 11 is connected to the ear hook 300. The first rigid housing 11 and the second rigid housing 12 enclose to form a first accommodation cavity 110, and the sound outlet hole 111 is arranged on the second rigid housing 12.

[0116] By setting the first rigid housing 11 to be connected to the ear hook 300 and arranging the sound outlet hole 111 on the second rigid housing 12, the integrity of the sound outlet hole 111 is effectively guaranteed, the possibility of the sound outlet hole 111 being interfered is reduced, thereby improving the stability and reliability of the operation of the sound outlet hole 111, and the alignment difficulty between the first rigid housing 11 and the second rigid housing 12 can be reduced, thus reducing the assembly difficulty of the sound generating component 20 and improving the assembly efficiency of the sound generating component 20. And with this setting, the sound outlet hole 111 does not need to penetrate through the first rigid housing 11 and the second rigid housing 12 at the same time, which can avoid the uneven surface of the sound outlet hole 111 and further affect the installation of the sound tuning net and the steel net.

[0117] Optionally, as Figure 19 and Figure 20As shown, a bump 123 protruding relative to the end face 122 of the second rigid housing 12 is provided on the second rigid housing 12, and a groove 113 recessed relative to the end face 114 of the first rigid housing 11 is provided on the first rigid housing 11. The bump 123 is embedded in the groove 113, and a part of the sound outlet hole 111 is provided on the bump 123. By providing the bump 123 and the groove 113 to realize the connection between the first rigid housing 11 and the second rigid housing 12, and by arranging a part of the sound outlet hole 111 on the bump 123, while ensuring the connection stability between the first rigid housing 11 and the second rigid housing 12, the sound outlet hole 111 has sufficient length, which is beneficial to improving the sound output effect of the earphone 1 and the sound quality of the earphone 1.

[0118] Optionally, as Figure 19 and Figure 20 shown, the mounting boss 271 is located on the sound generating assembly 20. Of course, the mounting boss 271 can also be located on the second rigid housing 12. A third support surface 115 is provided in the first rigid housing 11, and the third support surface 115 is used to support the sound generating assembly 20 so that when the first rigid housing 11 and the second rigid housing 12 are fixed to each other, the sound generating assembly 20 and the second rigid housing 12 abut against each other through the mounting boss 271. Such an arrangement can simplify the structure and the assembly process, reduce the assembly difficulty, and improve the assembly efficiency.

[0119] Optionally, as Figure 7 shown, when the sound generating assembly 20 and the second rigid housing 12 abut against each other through the mounting boss 271, a certain gap can be maintained between the end face 114 of the first rigid housing 11 and the end face 122 of the second rigid housing 12 along the abutting direction of the sound generating assembly 20 and the second rigid housing 12. Such an arrangement can make it possible that when the sound generating assembly 20 is positioned and installed by abutting the first rigid housing 11 and the second rigid housing 12 against the sound generating assembly 20, a certain gap is maintained between the first rigid housing 11 and the second rigid housing 12 to offset the assembly error of the sound generating assembly 20, thereby effectively improving the accuracy and stability of the positioning and installation of the sound generating assembly 20. And during the production and assembly process, the mounting boss 271 first abuts against the sound generating assembly 20 and the second rigid housing 12, and then the first rigid housing 11 is buckled with the second rigid housing 12, thereby squeezing the sound generating assembly 20 and the second rigid housing 12 to realize further fixation, effectively improving the abutting effect and the connection stability of the earphone 1.

[0120] Optionally, the axial direction (i.e., the direction of the axis Z) can be perpendicular to the abutting direction of the sound generating assembly 20 and the second rigid housing 12. Optionally, the magnetic circuit system 24 includes a magnetic conduction cover 241 protruding from the speaker frame 25 and a magnet 242 arranged in the magnetic conduction cover 241. As Figure 7 and Figure 19As shown, the third support tabletop 115 is configured to support the magnetic conductive covers 241 of the two speakers 21 respectively. Such a configuration can achieve the installation and fixation of the sound generating assembly 20 without affecting the vibration of the diaphragm 22, and has a stable structure, which is beneficial to improving the service life of the earphone 1.

[0121] Optionally, as Figure 9 and Figure 15 shown, the sound outlet hole 111 and the pressure relief hole 112 are respectively arranged in mirror symmetry with respect to the symmetry plane SF arranged along the length direction of the ear hook 300.

[0122] By arranging the sound outlet hole 111 and the pressure relief hole 112 which are respectively arranged in mirror symmetry with respect to the symmetry plane SF, while improving the aesthetic appearance of the earphone 1, the earphone 1 can be suitable for both the left ear and the right ear at the same time, thus effectively improving the adaptability of the earphone 1.

[0123] Optionally, as Figure 4 shown, the earphone 1 further includes a microphone 30. An incoming sound hole 101 for guiding external sound to the microphone 30 is arranged on the first housing 10, and the incoming sound hole 101 intersects with the symmetry plane SF. The microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls. And by arranging the incoming sound hole 101 to intersect with the symmetry plane SF, while ensuring the effectiveness of the microphone 30 collecting sound through the incoming sound hole 101, the earphone 1 can be suitable for the use of both the left ear and the right ear at the same time, effectively improving the adaptability of the earphone 1. Figure 4 The cross-section corresponding to the cutting line V-V in

[0124] Optionally, the number of microphones 30 can be set to one or more, for example, it can be 1, 2, 4, etc. When the number of microphones 30 is one, the microphone 30 intersects with the symmetry plane SF. When the number of microphones 30 is multiple, the multiple microphones 30 are symmetrically distributed with respect to the symmetry plane SF. Such a configuration can further make the earphone 1 suitable for the use of both the left ear and the right ear at the same time, effectively improving the adaptability of the earphone 1.

[0125] Optionally, as Figure 21 shown, Figure 21 is a schematic cross-sectional structure diagram of the sound generating part 100 with the symmetry plane SF as the cross-section. The minimum distance D10 between the sound outlet hole 111 and the pressure relief hole 112 is between 6.5 and 10 mm. Optionally, the minimum distance D10 is not less than 7 mm. Figure 21Taking the symmetry plane SF as the cross-section. Acoustic short-circuit means that when the diaphragm 22 of the speaker 21 moves forward or backward, the generated sound waves are out of phase, resulting in the cancellation of these sound waves with each other, thus making the sound lighter or unnatural. If the above interval distance D10 is too short, acoustic short-circuit may occur. By reasonably setting the interval distance D10 between the sound outlet hole 111 and the pressure relief hole 112, the possibility of acoustic short-circuit can be effectively reduced, which is beneficial to improving the sound quality of the earphone 1.

[0126] Optionally, as Figure 1 and Figure 17 shown, the pressure relief hole 112 is arranged towards the helix, and the sound outlet hole 111 and the pressure relief hole 112 are spaced from each other by the contact area between the first housing 10 and the ear EAR. This contact area can be the contact area between the first housing 10 and the antihelix or the concha. Separating the sound outlet hole 111 and the pressure relief hole 112 through the first housing 10 and the contact area can effectively reduce the interference between the sound outlet hole 111 and the pressure relief hole 112, thus effectively improving the reliability of the operation of the earphone 1, being beneficial to improving the sound quality of the earphone 1, and being applicable to both the left ear and the right ear of the user at the same time, with high adaptability.

[0127] Optionally, as Figure 9 and Figure 21 shown, the number of the sound outlet holes 111 is one and is arranged in a strip shape. The symmetry plane is arranged along the length direction of the sound outlet hole 111 and is perpendicular to the axis direction (i.e., the direction of the axis Z). With such a setting, when the earphone 1 is worn by the user, since there is not a complete fit between the first housing 10 and the concha of the user's ear EAR, but there is a space gradually increasing from the contact area between the first housing 10 and the ear EAR to the ear canal opening, the sound output from the sound outlet hole 111 will be reflected in the concha to be enhanced, so as to utilize the reflection effect to increase the sound pressure at the ear canal opening, so that the user can hear a louder sound.

[0128] Optionally, as Figure 15 and Figure 21 shown, the number of the pressure relief holes 112 is one and is arranged in a strip shape. The symmetry plane SF is arranged along the width direction of the pressure relief hole 112 and is perpendicular to the axis direction (i.e., the direction of the axis Z). With such a setting, the pressure relief hole 112 and the sound outlet hole 111 are made to be as far away as possible, effectively reducing the possibility of acoustic short-circuit, which is beneficial to improving the sound quality of the earphone 1.

[0129] Optionally, as Figure 22As shown, the pressure relief hole 112 includes a first hole portion 1121 and a second hole portion 1122 along the length direction of the pressure relief hole 112, and a third hole portion 1123 connected between the first hole portion 1121 and the second hole portion 1122, wherein at least part of the width W1 of the first hole portion 1121 and the width at at least part of the position of the second hole portion 1122 are greater than the width W3 of the third hole portion 1123. The widths of the first hole portion 1121, the second hole portion 1122, and the third hole portion 1123 refer to the dimensions in the width direction perpendicular to the length direction of the pressure relief hole 112. Such a setting can effectively reduce the possibility that the pressure relief hole 112 is blocked by the tragus or other ear positions while increasing the area of the pressure relief hole 112, which is beneficial to improving the pressure relief effect and further beneficial to improving the sound quality of the earphone 1. Moreover, with such a setting, while maintaining the pressure relief effect, the overall pressure relief hole 112 does not need to be set according to the maximum width, making the size more moderate and also facilitating the improvement of the aesthetics of the earphone 1.

[0130] Optionally, the symmetry plane SF is the symmetry plane of the earhook 300. Specifically, the symmetry plane of the earhook 300 is set along the length direction of the earhook 300, and the parts of the earhook 300 on both sides of the symmetry plane have the smallest difference or are the same. That is, if the earhook 300 is regularly symmetric, then the parts of the earhook 300 on both sides of the symmetry plane are the same. If the earhook 300 is not strictly symmetric, then the difference between the parts of the earhook 300 on both sides of the symmetry plane SF should be the smallest among various division methods. For example, the difference can be distinguished by observing the projection of the earhook 300 on a plane perpendicular to the symmetry plane.

[0131] Optionally, as Figure 19 , 20 and Figure 23 shown, the first housing 10 may further include a first flexible body 13. The first rigid housing 11 and the second rigid housing 12 enclose to form a first accommodation cavity 110, and the first flexible body 13 is disposed on the outer wall of the second rigid housing 12 and is used to contact the concha. The outermost circular line plane of the end face of the first flexible body 13 is the first reference plane S13. The midpoint of the sound generating component 20 along the axis Z or the axis Z of the sound generating component 20 is located on the side of the first reference plane S13 facing the first rigid housing 11 and is parallel to the first reference plane S13.

[0132] The rigid material can be plastic, metal or other support materials that can be used for the housing of the earphone 1 to provide better support and stability for the internal structure of the first housing 10, such as the sound generating component 20. The first flexible body 13 covers the outer wall of the second rigid housing 12. The first flexible body 13 can be made of silica gel or other skin-friendly flexible materials to improve the comfort when the sound generating part 100 contacts the wearer. Usually when worn, the second rigid housing 12 faces the concha cavity of the wearer and contacts the wearer. By covering the outer wall of the second rigid housing 12 with the first flexible body 13, the comfort of wearing the earphone 1 can be improved. In addition, by placing the midpoint of the sound generating component 20 along the axis Z or the axis Z of the sound generating component 20 on the side of the first reference plane S13 facing the first rigid housing 11, the center of the entire sound generating component 20 can be closer to the first rigid housing 11. That is, when the first flexible body 14 is provided on the outer wall of the second rigid housing 12, the centroid of the first housing 10 does not coincide with the centroid of the sound generating component 20, and the centroid of the sound generating component 20 is more biased towards the first rigid housing 11 relative to the centroid of the first housing 10, thus realizing the eccentric setting of the sound generating component 20, and thus making more use of the space inside the first rigid housing 11, which is beneficial to improving the space utilization rate.

[0133] Optionally, the distance D13 from the midpoint of the sound generating component 20 along the axis Z or the axis Z to the first reference plane S13 is between 0.4 and 4 mm. By setting the position of the sound generating component 20 in the first housing 10 in this way, more volume of the sound generating component 20 can be distributed towards the first rigid housing 11, so as to make full use of the relatively abundant internal space of the first rigid housing 11, enabling the first housing 10 to accommodate a larger sound generating unit.

[0134] Optionally, the sound generating part 100 is arranged to keep at least part of the ear canal open in the concha cavity, reducing the possibility of blocking the ear canal and affecting the transmission of sound into the user's ear canal, and being beneficial to the formation of sound reflection in the user's concha cavity to increase the listening volume.

[0135] In some embodiments, optionally, as Figure 11 shown, the ratio of the maximum axial dimension Z21 to the maximum radial dimension R20 of the sound generating component 20 is between 0.8 and 1.3. Optionally, this ratio can be 0.9, 1, 1.1, 1.2, etc. In this way, the maximum axial dimension Z21 and the maximum radial dimension R20 of the sound generating component 20 are very close, making the outer contour of the sound generating component 20 closer to a spherical shape, effectively improving the structural compactness and integration of the sound generating component 20, and effectively reducing the assembly difficulty and improving the assembly efficiency.

[0136] Optionally, the maximum radial dimension R20 of the sound generating component 20 is set to the maximum radial dimension of the mounting bracket 27 or the speaker frame 25, so that the mounting bracket 27 or the speaker frame 25 serves as the main force-bearing component during assembly, effectively protecting the diaphragm 22 and the voice coil 23, and effectively improving the reliability and effectiveness of the operation of the sound generating component 20. Optionally, the maximum axial dimension of the sound generating component 20 is set to the maximum axial dimension between the magnetic shields 241 of the two speakers 21 along the axial direction (i.e., the direction of the axis Z).

[0137] Optionally, in some embodiments, the resonance peak frequency of the diaphragms 22 of the two speakers 21 is between 200 and 300 Hz, and the absolute difference between the resonance peak frequencies of the diaphragms 22 of the two speakers 21 is less than or equal to 50 Hz. Among them, the resonance peak can be the first resonance peak that appears during the frequency sweep from low frequency to high frequency. Specifically, the resonance peak frequency refers to the frequency of the first resonance peak that appears in the order of increasing frequency during the electro-acoustic frequency sweep test of the structure composed of, for example, the speaker 21, the first housing 10, and the internal cavity of the first housing 10 in the sound generating part 100, and the position where the resonance peak appears corresponds to the position where the impedance curve of the sound generating part 100 suddenly increases.

[0138] By setting the speakers 21 with resonance peak frequencies within a reasonable range, the types and ranges of the sound fields played by the speakers 21 are relatively wide. There is better sound quality not only in human voices but also in aspects such as music playback. Moreover, the absolute difference between the resonance peak frequencies of the two speakers 21 is less than or equal to 50 Hz, making the consistency of the two speakers 21 relatively high, and the earphone 1 further improves the sound quality of the earphone 1.

[0139] In some embodiments, as Figure 21 shown, the sound outlet hole 111 is strip-shaped and has a first end 111a and a second end 111b that are spaced apart along the length direction of the sound outlet hole 111. In the worn state, the first end 111a faces the ear hole E11, and the distance D10 between the outer wall surface of the first housing 10 at the second end 111b and the inner wall surface of the concha cavity E12 is less than the distance D10 between the outer wall surface of the first housing 10 at the first end 111a and the inner wall surface of the concha cavity E12.

[0140] By arranging the first housing 10 such that the first end 111a of the sound outlet hole 111 faces the ear canal, it enables sound waves to enter the ear canal as much as possible through the sound outlet hole 111, effectively shortening the transmission path of the sound waves, effectively enhancing the volume effect of the sound heard by the user, and being beneficial to improving the sound quality of the earphone 1. In addition, by setting the distance D10 between the outer wall surface of the first housing 10 at the second end 111b and the inner wall surface of the concha E12 to be less than the distance D10 between the outer wall surface of the first housing 10 at the first end 111a and the inner wall surface of the concha E12, a kind of wedge-shaped space can be formed between the curve formed by the outer circle of the speaker 21 cutting the first housing 10 and the concha. When arranging the sound outlet hole 111 along the curve, a horn structure can be formed between the sound outlet hole 111 and the concha. Using the concha E12 as a reflecting wall surface can enhance the sound wave reflection, thereby effectively increasing the sound pressure at the ear canal and effectively increasing the listening volume.

[0141] Optionally, as Figure 21 shown, at the second end 111b and / or on the side of the second end 111b away from the first end 111a, the outer wall surface of the first housing 10 and the inner wall surface of the concha are in contact with each other. With such an arrangement, it can block the sound from spreading in the direction away from the ear canal, which is more conducive to the first housing 10 and the concha forming a horn structure that reflects sound towards the ear canal, thereby being beneficial to reducing the sound leakage of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0142] Optionally, as Figure 21 shown, the outer wall surface of the first housing 10 is arranged such that the long side hole edge 111c of the sound outlet hole 111 is arc-shaped, and the distance D10 between the outer wall surface of the first housing 10 and the inner wall surface of the concha gradually increases in the direction from the second end 111b to the first end 111a. With such an arrangement, it can make the sound reflect towards the ear canal within the horn structure formed between the concha E12 and the outer wall surface of the first housing 10, rather than reflecting in the direction away from the ear canal, effectively enhancing the sound output effect of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0143] Optionally, as Figure 21As shown, the arc-chord ratio of the long-side hole edge 111c of the sound outlet hole 111 is between 1.05 and 1.4. For example, it can be 1.1, 1.2, 1.3, etc. Among them, a symmetry plane is provided along the length direction of the earhook 300, and the arc-chord ratio of the long-side hole edge 111c of the sound outlet hole 111 is the arc-chord ratio of the projection profile of the long-side hole edge 111c on the symmetry plane. In some embodiments, the arc length of the long-side hole edge 111c of the sound outlet hole 111 is 10 mm, and the chord length is 8.87 mm. Optionally, the width-length ratio of the sound outlet hole 111 is between 0.15 and 0.30. For example, it is 0.18, 0.20, 0.25, etc. Optionally, the length of the sound outlet hole 111 can be between 9 mm and 16.5 mm. For example, it is 10 mm, 12 mm, 13 mm, 14 mm, 16 mm, etc. In some embodiments, the inner width of the sound outlet hole 111 is 1.95 mm, the outer width is 2.58 mm, and the length of the sound outlet hole 111 is 12.9 mm. By reasonably setting the arc length, chord length, width and length of the long-side hole edge 111c of the sound outlet hole 111, the size of the sound outlet hole 111 can better conform to the size and shape of the concha and ear canal, making it easier to form a horn structure for enhancing sound, effectively improving the sound output effect of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0144] Optionally, the arc-chord ratio of the long-side hole edge 111c of the sound outlet hole 111 is between 1.05 and 1.4, or greater than or equal to 1.02 and less than 1.05. For example, the arc-chord ratio of the long-side hole edge 111c of the sound outlet hole 111 can be 1.02, 1.04, 1.05, 1.1, 1.2, 1.3, etc. Optionally, the length of the sound outlet hole 111 is between 9 and 16.5 mm, or greater than or equal to 5 mm and less than 9 mm. For example, the length of the sound outlet hole 111 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 13 mm, 14 mm, 16 mm, etc. By reasonably setting the arc-chord ratio of the long-side hole edge 111c of the sound outlet hole 111 and the length of the sound outlet hole 111, the size of the sound outlet hole 111 can better conform to the size and shape of the concha and ear canal, making it easier to form a horn structure for enhancing sound, effectively improving the sound output effect of the earphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0145] Optionally, as Figure 24As shown, when the sound-emitting part 100 and the abutting part 400 are placed on a horizontal reference plane at the same time, the long side hole edge 111c of the sound-emitting hole 111 forms a first reference point M with the horizontal reference plane between the first end 111a and the second end 111b, the second end 111b is located on the side of the first reference point M facing the abutting part 400, and the first end 111a is located on the side of the first reference point M away from the abutting part 400. Such a configuration can make the first end 111a of the sound-emitting hole 111 closer to the ear hole, and the first shell 10 near the second end 111b can abut against the concha cavity and be clamped on both sides of the user's ear EAR with the abutting part 400, thereby achieving a stable clamping of the ear EAR while utilizing the concha cavity to increase the volume and sound pressure, and the portion of the first shell 10 abutting against the concha cavity can further block the sound from propagating in the direction away from the ear hole, which is conducive to reducing sound leakage.

[0146] Optionally, the length D12 of the long side edge 111c of the sound outlet hole 111 between the first end 111a and the first reference point M is between 2 and 5.5 mm, for example, it can be 2.55 mm, 3.56 mm, 4 mm, 4.76 mm, etc., and the length D13 of the long side edge 111c of the sound outlet hole 111 between the second end 111b and the first reference point M is between 4.5 and 8 mm, for example, it can be 5.53 mm, 6 mm, 6.73 mm, 7.81 mm, etc. The above lengths all indicate the distance between corresponding positions on the projection contour of the sound hole 111 on the symmetry plane. By reasonably setting the distance from the first end 111a and the second end 111b to the first reference point M, the enhancement effect of the propagation of sound waves in the concha cavity E12 to the ear hole is further improved, the sound pressure at the ear hole is effectively increased, and the listening volume is effectively increased.

[0147] Optionally, the arc-chord ratio of the long side hole of the sound outlet hole 111 between the first end 111a and the first reference point M is between 1.02 and 1.05, for example, it can be 1.03, 1.04, etc., and the arc-chord ratio of the long side hole of the sound outlet hole 111 between the second end 111b and the first reference point M is between 1.02 and 1.05, for example, it can be 1.03, 1.04, etc. The above arc-chord ratios all indicate the arc-chord ratios between corresponding positions on the projected contour of the sound hole 111 on the symmetry plane. By reasonably setting the arc-chord ratio of the long side hole edge 111c of the sound outlet hole 111 between the first end 111a and the second end 111b and the first reference point M, while adapting to the shape of the user's concha cavity to ensure wearing comfort, the sound reflection effect of the horn structure formed by the outer wall surface of the first shell 10 and the concha cavity is improved, and the listening volume and the user's sense of use are effectively improved.

[0148] Optionally, the arc chord ratio between the long side hole of the sound outlet hole 111 at the first end 111a and the first reference point M is between 1.02 and 1.05, or greater than or equal to 1.001 and less than 1.02. For example, it can be 1.001, 1.005, 1.01, 1.02, 1.03, 1.04, etc.; the arc chord ratio between the long side hole of the sound outlet hole 111 at the second end 111b and the first reference point M is between 1.02 and 1.05, or greater than 1.05 and less than or equal to 1.07. For example, it can be 1.03, 1.04, 1.05, 1.06, 1.07, etc. The above arc chord ratios all refer to the arc chord ratios between the corresponding positions on the projection contour of the sound outlet hole 111 on the symmetry plane. By reasonably setting the arc chord ratios of the long side hole edge 111c of the sound outlet hole 111 between the first end 111a and the second end 111b and the first reference point M, while adapting to the shape of the user's concha to ensure wearing comfort, the sound reflection effect of the horn structure formed by the outer wall surface of the first housing 10 and the concha is improved, effectively enhancing the listening volume and the user experience.

[0149] Optionally, as Figure 24 shown, the long side hole edge 111c of the sound outlet hole 111 has a first normal direction F1 at the first reference point M, the long side hole edge 111c of the sound outlet hole 111 has a second normal direction F2 at the first end 111a, and the long side hole edge 111c of the sound outlet hole 111 has a third normal direction F3 at the second end 111b. The included angle α1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°, and the included angle α2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°. The included angle α1 between the first normal direction F1 and the second normal direction F2 can be, for example, 32°, 35°, 37°, etc., and the included angle α2 between the first normal direction F1 and the third normal direction F3 can be, for example, 53°, 55°, 57°, etc. The above included angles all refer to the included angles between the corresponding positions on the projection contour of the sound outlet hole 111 on the symmetry plane. By reasonably setting the above included angles, while ensuring the spatial size of the sound outlet hole 111, the sound reflection effect of the horn structure formed between the outer wall surface of the first housing 10 and the concha is improved, effectively enhancing the listening volume and the user experience.

[0150] Optionally, as Figure 24As shown, the long-side hole edge 111c of the sound outlet hole 111 has a first normal direction F1 at the first reference point M, the long-side hole edge 111c of the sound outlet hole 111 has a second normal direction F2 at the first end 111a, and the long-side hole edge 111c of the sound outlet hole 111 has a third normal direction F3 at the second end 111b. The included angle α1 between the first normal direction F1 and the second normal direction F2 is between 30° and 42°, or greater than or equal to 15° and less than 30°; the included angle α2 between the first normal direction F1 and the third normal direction F3 is between 50° and 60°, or greater than or equal to 25° and less than 50°. The included angle α1 between the first normal direction F1 and the second normal direction F2 can be, for example, 15°, 20°, 25°, 30°, 32°, 35°, 37°, etc., and the included angle α2 between the first normal direction F1 and the third normal direction F3 can be, for example, 25°, 30°, 35°, 40°, 50°, 53°, 55°, 57°, etc. The above included angles all refer to the included angles between the corresponding positions on the projected contour of the sound outlet hole 111 on the symmetry plane. By reasonably setting the above included angles, while ensuring the spatial size of the sound outlet hole 111, the sound reflection effect of the horn structure formed between the outer wall surface of the first housing 10 and the concha is improved, effectively improving the listening volume and the user experience.

[0151] Optionally, as Figure 9 shown, the sound outlet hole 111 has a central dividing line arranged along its length direction. The sound outlet hole 111 intersects with a reference section SF arranged along the length direction of the earhook 300, and the included angle between the plane where the central dividing line is located and the reference section SF is between 0 and 45°, and the sound outlet hole 111 is offset towards the earlobe direction. The central dividing line can be a virtual curve that divides the sound outlet hole 111 into two equal parts along the length direction. Preferably, the sound hole 111 intersects with a reference section SF arranged along the length direction of the earhook 300, and the included angle between the plane where the central dividing line is located and the reference section SF is between 15° and 45°, for example, it can be 20°, 30°, etc. In some embodiments, the reference section SF can coincide with the symmetry plane arranged along the length direction of the earhook 300, so the symmetry plane is also marked as the symmetry plane SF when describing the symmetry plane later. In this way, the reference section SF can be arranged along the length direction of the earhook 300, and the parts of the earhook 300 on both sides of the reference section SF have the smallest difference or are the same. Of course, in other embodiments, the reference section SF and the symmetry plane of the earhook are parallel to each other, but can be offset by a small distance.

[0152] By reasonably setting the angle between the mid-division line of the sound outlet hole 111 and the reference cross-section SF of the ear hook 300, the sound outlet hole 111 is set to be offset towards the earlobe direction. While ensuring the wearing comfort of the user, as much sound output from the sound outlet hole 111 as possible is transmitted towards the ear canal, effectively improving the user experience of the earphone 1. Specifically, when the user wears the earphone 1 naturally, the earphone 1 may tilt downward under the action of gravity as the user moves. Such a setting can ensure that even when the earphone 1 is tilted, the sound outlet hole 111 is as much as possible directly facing the ear canal, effectively increasing the listening volume of the user when the earphone 1 is in a tilted state and improving the user experience.

[0153] Optionally, the plane where the mid-division line is located coincides with the reference cross-section SF. Alternatively, the sound outlet hole 111 is mirror-symmetrical with respect to the reference cross-section SF. Such a setting enables the earphone 1 to adapt to the wearing and use of both the left and right ears simultaneously, effectively improving the adaptability of the earphone 1 while ensuring the wearing comfort of the user.

[0154] Optionally, as Figure 25 shown, on the reference cross-section SF, the sound-generating part 100 has a second reference point N closest to the abutting part 400. In some embodiments, in the natural state, the sound-generating part 100 and the abutting part 400 do not directly abut, then the second reference point N is the intersection point of the shortest connection line between the sound-generating part 100 and the abutting part 400 and the outer wall surface of the sound-generating part 100, and the midpoint of this shortest connection line is O. In other embodiments, in the natural state, the sound-generating part 100 and the abutting part 400 just abut or the abutting area is very small, then the abutting point of the sound-generating part 100 and the abutting part 400 is considered as the second reference point N. In still other embodiments, in the natural state, the abutting area between the sound-generating part 100 and the abutting part 400 is relatively large, then on the reference cross-section SF, the midpoint of the arc corresponding to the abutting area between the outer wall surface of the sound-generating part 100 and the abutting part 400 is the second reference point N.

[0155] The inner contour of the ear hook 300 has a third reference point C farthest from the second reference point N in the area close to the edge of the helix in the wearing state. The sound outlet hole 111 is located on the side of the second reference point N away from the third reference point C, and on the outer wall surface of the sound-generating part 100, the distance D13 from the second end 111b to the second reference point N is between 2.2 and 4.2 mm, and the distance from the first end 111a to the second reference point N is between 9 and 12.4 mm. The distance from the second end 111b to the second reference point N can be, for example, 2.3 mm, 2.6 mm, 2.9 mm, etc., and the distance from the first end 111a to the second reference point N can be 9.8 mm, 10.7 mm, 11.6 mm, etc. Of course, it can also be other values. The above distances all refer to the distances between the corresponding positions on the projected contour of the sound outlet hole 111 on the symmetry plane.

[0156] Optionally, asFigure 15 As shown, the pressure relief hole 112 is arranged facing the helix and intersects with the reference section SF, or the pressure relief hole 112 is arranged facing the helix and is mirror-symmetrical with respect to the reference section SF. Such an arrangement can ensure the pressure relief effect of the pressure relief hole 112 while effectively reducing the possibility of interference between the pressure relief hole 112 and the sound outlet hole 111, and effectively improving the stability and reliability of the operation of the earphone 1.

[0157] Optionally, as Figure 1 and Figure 21 shown, the pressure relief hole 112 and the sound outlet hole 111 are spaced from each other by the contact area between the sound generating part 100 and the ear part EAR (such as the concha). Separating the sound outlet hole 111 and the pressure relief hole 112 through the contact area between the sound generating part 100 can effectively reduce the possibility of acoustic short circuit between the sound outlet hole 111 and the pressure relief hole 112, thereby effectively improving the reliability of the operation of the earphone 1, being beneficial to improving the sound quality of the earphone 1, and being applicable to both the left ear and the right ear of the user at the same time, with high adaptability.

[0158] Optionally, as Figure 15 shown, the number of the pressure relief holes 112 is one and is arranged in a strip shape, and the reference section SF is arranged along the width direction of the pressure relief hole 112 and intersects with the reference section SF. Such an arrangement can ensure the pressure relief area to effectively ensure the pressure relief effect of the pressure relief hole 112 while preventing the pressure relief hole 112 from extending too much in the direction of the ear hook 300, which is beneficial to improving the aesthetics of the earphone 1.

[0159] Optionally, the number of the pressure relief holes 112 is two, which are respectively arranged on both sides of the reference section SF, and the pressure relief holes 112 are mirror-symmetrical with respect to the reference section SF. The reference section SF is arranged along the width direction of the pressure relief hole 112 (that is to say, the reference section SF is parallel to the width direction of the pressure relief hole 112 and allows an error within 15°). Such an arrangement can ensure the pressure relief area to effectively ensure the pressure relief effect of the pressure relief hole 112 while preventing the pressure relief hole 112 from extending too much in the direction of the ear hook 300, which is beneficial to improving the aesthetics of the earphone 1. Optionally, as Figure 15 shown, the pressure relief hole 112 is mirror-symmetrical with respect to the reference section SF. While improving the aesthetics of the earphone 1, it enables the earphone 1 to adapt to the wearing of both the left ear and the right ear, effectively improving the adaptability of the earphone 1.

[0160] Optionally, as Figures 15 to 17As shown, the sound generating component 20 is provided with at least one second sound guiding hole 204 that communicates with the pressure relief hole 112 through the first accommodating space. The distance between at least one second sound guiding hole 204 and the pressure relief hole 112 is not greater than 0.5 mm, or greater than 0.5 mm and less than or equal to 4 mm. Optionally, the distance between at least one second sound guiding hole 204 and the pressure relief hole 112 is not greater than 3 mm. Optionally, this distance is not greater than 2 mm. Optionally, this distance is not greater than 0.4 mm. Optionally, this distance is not greater than 0.3 mm. If the distance from the sound guiding hole to the pressure relief hole 112 is too large, it will lead to a reduction in pressure relief performance, thereby affecting the sound quality of the earphone 1. By reasonably setting the distance from the sound guiding hole to the pressure relief hole 112, the pressure relief efficiency is effectively improved, which is beneficial to improving the sound quality of the earphone 1.

[0161] Optionally, as Figure 4 , Figures 19 to 21 shown, the earphone 1 further includes a microphone 30. An incoming sound hole 101 for guiding external sound to the microphone 30 is provided on the first housing 10. The incoming sound hole 101 intersects with the reference section SF. The microphone 30 can be used to collect sound, so that the earphone 1 can adapt to different usage scenarios such as playing music and making calls. And by setting the incoming sound hole 101 to intersect with the reference section SF, while ensuring the effectiveness of the microphone 30 collecting sound through the incoming sound hole 101, the earphone 1 can be adapted to the use of both the left ear and the right ear at the same time, effectively improving the adaptability of the earphone 1. Figure 4 The cross-section corresponding to the cutting line V-V in

[0162] Optionally, the ear hook 300 provides an elastic force between the sound generating part 100 and the abutting part 400, so that the sound generating part 100 and the abutting part 400 have a clamping force F for clamping on both sides of the auricle in the wearing state. As Figure 26 shown, the ear hook 300 is set to make the sound generating part 100 and the abutting part 400 abut against each other in the natural state to form a pre-tightening force F0.

[0163] In the wearing state, the ear hook 300 can undergo a certain amount of elastic deformation to apply a certain elastic force on both sides of the user's earlobe. Under the action of the elastic force, the sound generating part 100 and the abutting part 400 respectively abut against both sides of the auricle to clamp the ear. However, if the elastic force provided by the ear hook 300 is too large, the clamping force F will be too large, which will cause discomfort to the ear. If it is too small, the clamping force F will be too small and it will be difficult to wear stably.

[0164] According to Hooke's law, the elastic force generated by elastic deformation is proportional to the amount of deformation of the object, and the ratio is the elastic coefficient. To meet the requirement of clamping the ear part with a smaller thickness, the elastic coefficient of the earhook 300 is usually set to be relatively large. However, this will cause the elastic force applied to be too large when clamping the ear part with a larger thickness, resulting in pain and relatively low wearing comfort. Moreover, a larger elastic coefficient leads to a relatively large change in the clamping force F when adapting to ears of different thicknesses, and thus a relatively large difference in the clamping force F, resulting in a relatively large difference in the user experience and low compatibility. As Figure 27 shown, the clamping force change line L1 has no pre-tightening force and a relatively large elastic coefficient, resulting in a relatively large clamping force F when the distance between the sound generating part 100 and the abutting part 400 changes from X s to X m , and the change amount of the clamping force △F1 is relatively large. Based on this, by setting the earhook 300 to make the sound generating part 100 and the abutting part 400 abut against each other in the natural state to form a pre-tightening force, the elastic coefficient of the earhook 300 can be reduced, so that when clamping ears with a smaller thickness and a larger thickness, the elastic force applied by the earhook 300 changes relatively little, effectively reducing the difference in the clamping force F for clamping ears with a smaller thickness and a larger thickness, effectively improving the adaptability and wearing comfort of the earphone 1, and enabling the earphone 1 to be worn by a larger number of users with different ear sizes. As Figure 27 shown, relative to the clamping force change line L1, on the basis of having a pre-tightening force F0, when the distance between the sound generating part 100 and the abutting part 400 changes from X s to X m , the clamping force F is relatively small, and the change amount of the clamping force △F2 is also relatively small. Therefore, the above technical effects can be effectively achieved, such as reducing the difference in the clamping force F for clamping ears with a smaller thickness and a larger thickness, effectively improving the adaptability and wearing comfort of the earphone 1, and enabling the earphone 1 to be worn by a larger number of users with different ear sizes.

[0165] After a large number of empirical studies conducted by the applicant to improve the wearing comfort of the earphone 1, it is found that the ear thickness X s of small-ear people is approximately 3.8 mm, while the ear thickness X m of large-ear people is approximately 5.5 mm. After obtaining this data, the applicant conducts corresponding research on the earphone 1 in terms of pre-tightening force and elastic coefficient.

[0166] Optionally, the elastic coefficient of the earhook 300 is set such that when the minimum interval between the sound generating part 100 and the abutting part 400 increases from 3.8 mm to 5.5 mm, the change amount of the elastic force is less than or equal to 20 grams-force, for example, it can be 5 grams-force, 10 grams-force, 15 grams-force. As Figure 27As shown, on the basis of the pre-tightening force F0, the distance between the sound generating part 100 and the abutting part 400 is X m the clamping force F is small, and the change in the clamping force ΔF2 is also small.

[0167] By reasonably setting the elastic coefficient, so that under the condition of meeting the clamping requirements, the change in the elastic acting force is small, so that when the earphone 1 clamps ears with larger and smaller thicknesses, the clamping force provided by the ear hook 300 has a small difference, while meeting the wearing comfort, effectively improving the adaptability of the earphone 1.

[0168] Optionally, the elastic coefficient and pre-tightening force of the ear hook 300 are set such that when the minimum interval between the sound generating part 100 and the abutting part 400 increases from 3.8 mm to 5.5 mm, the elastic acting force is between 25 gf and 65 gf, for example, it can be 30 gf, 40 gf, 50 gf, etc.

[0169] By reasonably setting the elastic coefficient and pre-tightening force of the ear hook 300 to provide an appropriate elastic acting force, so as to provide an appropriate clamping force F for the user in the wearing state, while ensuring the wearing stability and improving the wearing comfort.

[0170] As Figure 28 shown, the pre-tightening force F0 can be measured by the thin film pressure sensor 600, specifically by clamping the thin film pressure sensor 600 between the abutting part 400 and the sound generating part 100. In some other embodiments, as Figure 29 and Figure 30 shown, the pre-tightening force F0 can also be measured by the tensiometer / sensor 607, 613. For example, by fixing one of the sound generating part 100 and the abutting part 400, and pulling the other of the sound generating part 100 and the abutting part 400 so that the two just contact / separate, or when the minimum distance between the two is a small distance, the measured pulling force is the pre-tightening force. The small distance is, for example, 0 to 0.8 mm.

[0171] As Figure 29 and Figure 30 shown, the clamping force F can be measured when the sound generating part 100 and the abutting part 400 are horizontally arranged. Specifically, the abutting part 400 is fixed by the tensiometer / sensor, and the sound generating part 100 is pulled for measurement. For example, after bonding the wire to the housing of the sound generating part 100, the wire is pulled by a displacement of, for example, 3.8 mm to 5.5 mm for measurement.

[0172] As Figure 29As shown, the auxiliary plate 603 and the angle code 601 are fixed in the X direction (without relative displacement in the X direction) by an adhesive (such as quick-drying glue, hot melt glue, etc.) or other fixing means that do not damage the structure of the earphone 1. The auxiliary plate 604 and the angle code 602 are fixed in the X direction (without displacement in the X direction), and the auxiliary plate 603 and the auxiliary plate 604 are placed on a support table with a relatively small coefficient of friction in the X direction (such as a lubricating oil interface or a support table on a bearing support). The inner side of the angle code 601 in the Y direction and the inner side of the angle code 602 in the Y direction are respectively tangent to both sides of the earphone 1 near the two ends of the earhook 300, so as to fix the earphone 1 between the angle code 601 and the angle code 602. The dynamometer 607 is connected to the angle code 602 in the X direction, for example, the dynamometer 607 and the angle code 602 are fixed by a screw 606. In some embodiments, the earphone 1 can be further fixed by an adhesive (such as quick-drying glue, hot melt glue, etc.) or other fixing means that do not damage the structure of the earphone 1, so that the connection positions of the earphone 1 with the two angle codes 601 and 602 are close to the horizontal direction. For example, as Figure 29 shown, one side of the sound generating part 100 is fixedly connected to the angle code 601 at the position A, and one side of the abutting part 400 is fixedly connected to the angle code 602 at the position B. The line connecting the positions A and B is substantially parallel to the X direction. During measurement, the auxiliary plate 604 is fixed, and the auxiliary plate 603 is moved with a pulling force in the X direction, so that the sound generating part 100 and the abutting part 400 are pulled apart, and the magnitude of the pulling force is obtained through the dynamometer 607, and the distance between the auxiliary plate 603 and the auxiliary plate 604 is obtained through a vernier caliper, that is, the distance by which the sound generating part 100 and the abutting part 400 are pulled apart.

[0173] As Figure 30 shown, the abutting part 400 is fixed between the two clamping plates by a fastening member 608. One end of the force measuring line 612 is connected to the shell on the side of the sound generating part 100 away from the abutting part 400 by an adhesive (such as quick-drying glue, hot melt glue, etc.) (for example, the force measuring line 612 is connected to the sound generating part 100 at the position C, and the symmetry plane SF of the earhook 300 can pass through the position C), and the other end of the force measuring line 612 is connected to the dynamometer 614. The force measuring line 612 is parallel to the X direction. During measurement, the dynamometer 614 is moved with a pulling force in the X direction, so as to pull the sound generating part 1 to move, so that the sound generating part 100 and the abutting part 400 are pulled apart, and the distance by which the sound generating part 100 and the abutting part 400 are pulled apart is obtained through the vernier caliper 609, and the magnitude of the pulling force is obtained through the dynamometer 14.

[0174] Optionally, the pre-tightening force is set to be between 1 gf and 25 gf, and the elastic coefficient of the earhook 300 is set such that when the minimum interval is 3.85 mm, the elastic acting force is between 25 gf and 48 gf, and when the minimum interval is 5.5 mm, the elastic acting force is between 26 gf and 65 gf. Optionally, the width of the earhook 300 can be between 3 and 10 mm, and the thickness can be between 0.5 and 5 mm. By reasonably setting the width and thickness parameters of the earhook 300, the elastic acting force changes substantially linearly in the usage scenario, and while satisfying the clamping stability, the wearing comfort is effectively improved, the adaptability of the earphone 1 is effectively improved, as well as the wearing stability and reliability.

[0175] Optionally, as Figure 26 shown, the earphone 1 may further include a magnetic coupling matching structure 50, and the magnetic coupling matching structure 50 provides a magnetic coupling acting force between the sound generating part 100 and the abutting part 400. The magnetic coupling acting force and the elastic acting force cooperate to form a clamping force F. The variation trend of the magnetic coupling acting force with respect to the minimum interval between the sound generating part 100 and the abutting part 400 is opposite to the variation trend of the elastic acting force with respect to the minimum interval. For example, when the minimum interval between the sound generating part 100 and the abutting part 400 gradually increases, the elastic acting force gradually increases while the magnetic coupling acting force gradually decreases. Among them, the magnetic coupling acting force provided by the magnetic coupling matching structure 50 can be used for the case where the sound generating part 100 and the abutting part 400 abut against each other when the earhook 300 is in the natural state, or for the case where the earhook 300 is set such that the sound generating part 100 and the abutting part 400 are separated from each other in the natural state.

[0176] By setting the magnetic coupling matching structure 50 to provide the magnetic coupling acting force, the magnetic coupling acting force can cooperate with the elastic acting force to provide a more appropriate clamping force F in the wearing state, and can effectively reduce the change and fluctuation of the clamping force F when the minimum interval changes, effectively improving the wearing comfort, reducing the pre-tightening force required to be provided by the earhook 300, and making the wearing process of the user smoother.

[0177] Optionally, as Figure 31As shown, the magnetic coupling matching structure 50 includes a first magnetic coupling matching member 51 disposed on the sound generating portion 100 and a second magnetic coupling matching member 52 disposed on the abutting portion 400, and the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 are magnetically attracted to each other. The first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be magnets. The first magnetic coupling matching member on the sound generating portion 100 can be the magnet 242 of the speaker 21, or an additional magnet or other magnetic member. By respectively disposing the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 on the sound generating portion 100 and the abutting portion 400, the magnetic attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 is utilized to provide a magnetic coupling force, so as to maintain a relatively stable and moderate clamping force when clamping ears EAR with a larger or smaller thickness, effectively improving the wearing comfort. Optionally, the magnets can be arranged in a Halbach array to increase the provided magnetic force, which is beneficial to improving the wearing stability. Optionally, the magnets are disposed in the first flexible body 14 to avoid interference with other components and improve the integration and compactness of the structure of the earphone 1.

[0178] In the wearing state, the attraction between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can compensate for the clamping force F between the sound generating portion 100 and the abutting portion 400. As Figure 31 shown, the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can attract each other to generate an attraction force FA to compensate for the clamping force F provided by the ear hook 300 for the sound generating portion 100 and the abutting portion 400. That is to say, in the wearing state, the clamping force F includes the attraction force F A and the elastic acting force F k generated by the elastic deformation of the ear hook 300. In some embodiments, the relationship between the distance and the attraction force between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 can be represented by formula (1):

[0179]

[0180] where K is a constant, m 1 can represent the magnetic moment of the first magnetic coupling matching member 51, m 2 can represent the magnetic moment of the second magnetic coupling matching member 52, d can represent the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52, X 0 can represent the distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 in the non-wearing state, and x can represent the increased distance between the first magnetic coupling matching member 51 and the second magnetic coupling matching member 52 in the wearing state due to the movement of the sound generating portion 100 and the abutting portion 400.

[0181] As can be seen from Equation (1), the greater the increase in distance X between the sound - generating part 100 and the abutting part 400, the greater the corresponding increase in the distance d between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52, and the smaller the attraction force F between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52. A decreases accordingly.

[0182] In some embodiments, a dynamometer and cushioning materials of different thicknesses (e.g., silica gel pads, thick paper sheets, rubber pads, etc.) can be used to measure the different attraction forces corresponding to different distances between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52. For example, the earhook 300 of the earphone 1 can be cut off, and then any one of the sound - generating part 100 and the abutting part 400 can be fixed, and the other part of the sound - generating part 100 and the abutting part 400 can be connected to the dynamometer. The sound - generating part 100, the abutting part 400, and the dynamometer can generally refer to Figure 29 and Figure 30 . Different - thickness cushioning materials are placed between the sound - generating part 100 and the abutting part 400 to control the distance between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52, and at the same time, the attraction force between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52 when different - thickness cushioning materials are placed is measured by the dynamometer. In some embodiments, the attraction force can be measured by a thin - film pressure sensor. Specifically, after cutting off the earhook 300, the thin - film pressure sensor and different - thickness cushioning materials are placed between the sound - generating part 100 and the abutting part 400, so that the thin - film pressure sensor is squeezed by the attraction force between the first magnetic - coupling matching part 51 in the sound - generating part 100 and the second magnetic - coupling matching part 52 in the abutting part 400, thereby measuring the attraction force corresponding to different distances between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52.

[0183] In some embodiments, in the non - wearing state, the earhook 300 can provide a pre - tightening force F0 to make the sound - generating part 100 and the abutting part 400 abut against each other. For a detailed description of the pre - tightening force, reference can be made to the above - related description, and details will not be elaborated here.

[0184] In some embodiments, in the non - wearing state, the sound - generating part 100 and the abutting part 400 do not contact each other. In the non - wearing state, the sound - generating part 100 and the abutting part 400 do not contact each other, that is, there is no pre - tightening force between the sound - generating part 100 and the abutting part 400 to make them abut against each other.

[0185] In some embodiments, in the wearing state, the clamping force F between the sound - generating part 100 and the abutting part 400 includes the elastic acting force F generated by the elastic deformation of the earhook 300 k and the attraction force F between the first magnetic - coupling matching part 51 and the second magnetic - coupling matching part 52. A . In some embodiments, the clamping force F may further include the pre - tightening force F0 provided by the earhook 300 for the sound - generating part 100 and the abutting part 400 to abut against each other.

[0186] As described above, in order to ensure the stability of the headset 1 on the wearer's ear, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the pre-tightening force) needs to be greater than the lower limit of the clamping force corresponding to the minimum auricle thickness. Also, it is necessary to ensure that the clamping force is less than the upper limit value of the clamping force corresponding to the maximum auricle thickness to avoid discomfort for users with a relatively large auricle thickness when wearing the earclip-type headset. In some embodiments, when the distance between the housing of the sound generating part 100 and the abutting part 400 is between 3.5 mm and 5.6 mm or between 3.8 mm and 5.5 mm, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the pre-tightening force) can be between 0.20 N and 0.70 N. For example, based on the lower limit of the clamping force of 0.20 N corresponding to the minimum auricle thickness and the upper limit of the clamping force of 0.70 N corresponding to the maximum auricle thickness, it can be determined that the clamping force (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the pre-tightening force) provided by the earhook 300 is between 0.20 N and 0.70 N. In some embodiments, when the distance between the housing of the sound generating part 100 and the abutting part 400 is between 3.8 mm and 5.5 mm, the clamping force F (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the pre-tightening force) can be between 0.25 N and 0.65 N. Again, for example, based on the lower limit of the clamping force of 0.25 N corresponding to the minimum auricle thickness and the upper limit of the clamping force of 0.65 N corresponding to the maximum auricle thickness, it can be determined that the clamping force (i.e., the sum of the elastic force and the attractive force, or the sum of the elastic force, the attractive force and the pre-tightening force) provided by the earhook 300 is between 0.25 N and 0.65 N.

[0187] As described above, the greater the distance X between the sound generating part 100 and the abutting part 400, the greater the elastic force F provided by the earhook 300 k and the smaller the attractive force F between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52. A Therefore, the gap between the clamping force F received by small-ear users and the clamping force F received by large-ear users can be further reduced based on the attractive force between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52. For example, the clamping force F is limited to between 0.3 N and 0.5 N, that is, the gap between the clamping force received by small-ear users and the clamping force received by large-ear users is reduced to 0.20 N at the same time. In some embodiments, when the distance between the housing of the sound generating part 100 and the abutting part 400 is between 3.8 mm and 5.5 mm, the change in the clamping force F does not exceed 0.20 N. From this, it can be seen that Figure 27 as shown, in order to ensure that the gap between the clamping force received by small-ear users and the clamping force received by large-ear users is small, it can be based on the minimum auricle thickness Xs, the set lower limit of the clamping force F1, the maximum auricle thickness X mWhen the upper limit of the set clamping force is F3, it is defined that when the distance between the sounding part 100 and the abutting part 400 varies between 3.8 mm and 5.5 mm, the change in the clamping force does not exceed 0.20 N (i.e., the difference between F3 and F1) for example.

[0188] In some embodiments, when the distance between the sounding part 100 and the abutting part 400 is between 3.8 mm and 5.5 mm, the change in the attractive force between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 can be between 0.05 N and 0.10 N.

[0189] As Figure 32 shown, the clamping force F includes an elastic acting force F k and an attractive force F A . The initial distance between the first magnetic coupling matching part 51 and the second magnetic coupling matching part 52 is X 0 . The elastic acting force F k is equal to kX, where k is the elastic coefficient and X is the distance between the sounding part 100 and the abutting part 400. The attractive force F A can be calculated based on the formula (1) described above. When the distance between the sounding part 100 and the abutting part 400 is between X 1 and X 2 , the elastic acting force F k is between F sk and F mk , the attractive force F A is between F ma and F sa , and the clamping force F is between F s and F m , where F s =F ma +F sk , F m =F mk +F sa . For example, when the distance between the sounding part 100 and the abutting part 100 is between 3.8 mm and 5.5 mm, the corresponding elastic acting force is between 0.27 N and 0.35 N. In order to ensure that the clamping force is between 0.3 N and 0.4 N, the attractive force that needs to be compensated is between 0.03 (0.3 - 0.27 = 0.03) N and 0.05 (0.4 - 0.35 = 0.05) N. It can be seen from Figure 13 that by setting appropriate magnetic coupling parameters (K, m1, m2, X 0 ) etc. and the elastic coefficient k etc., it can be achieved that within the range of X 1 to X 2 , the increment of F k and the decrement of FA are roughly offset or mostly offset, so that the total clamping force F is within X 1 to X 2remains basically stable within the range, so that the user experience brought by the earphone 1 to users with different auricle thicknesses remains consistent. X 1 ~X 2 The range of, for example, includes 3.8 mm to 5.5 mm.

[0190] In some embodiments, the earhook 300 further provides a pre-tightening force F0, and the total clamping force F can be kept within a suitable range by adjusting the magnitudes of the pre-tightening force F0 and the attractive force F A As shown, the earhook 300 can simultaneously provide an elastic acting force F Figure 33 As shown, the earhook 300 can simultaneously provide an elastic acting force F k , a pre-tightening force F0 and an attractive force F A , at this time, the clamping force F of the earhook 300 on users with large ears has exceeded the upper limit of the pre-tightening force. The clamping force F can be made to be within the range of the minimum auricle thickness X s and the maximum auricle thickness X m by reducing the pre-tightening force F0 from F01 to F02. The curve corresponding to the clamping force F is relatively flat within this range, and within the appropriate clamping force interval range, indicating that the cooperation of the pre-tightening force and the attractive force can improve the wearing stability and comfort of the earclip-type earphone, and reduce the clamping force difference between users with large ears and small ears.

[0191] Optionally, the elastic acting force and the magnetic coupling acting force are set such that when the minimum distance between the sound generating part 100 and the abutting part 400 increases from 3.85 mm to 5.5 mm, the clamping force is between 25 gf and 65 gf, and can be, for example, 30 gf, 40 gf, 50 gf, 60 gf, etc. It should be noted that 1 gf represents the gravity of an object of 1 gram.

[0192] By reasonably setting the elastic acting force and the magnetic coupling acting force, a consistent clamping force is provided for users with different ear sizes in the wearing state, while ensuring the wearing stability and improving the wearing comfort.

[0193] Optionally, the magnetic coupling acting force is set such that when the minimum distance between the sound generating part 100 and the abutting part 400 increases from 3.8 mm to 5.5 mm, the change amount of the magnetic coupling acting force is greater than or equal to 20 gf. Such a setting can make the change amount of the magnetic coupling acting force relatively large, so that the change amount of the elastic acting force can be relatively small, and thus the elastic coefficient of the earhook 300 can be set relatively small, which is beneficial to improving the wearing stability and reliability of the earphone 1.

[0194] Optionally, as Figure 34As shown, the ear hook 300 includes an elastic sheet 301. The two ends of the elastic sheet 301 in its length direction are relatively fixed to the sound generating part 100 and the abutting part 400 respectively. The ratio of the width W31 to the thickness K31 of the elastic sheet 301 is 8 to 12, and can be, for example, 9, 10, 11, etc. In some embodiments, the width W31 of the elastic sheet 301 is between 1 and 3 mm, for example, it can be 2 mm, and the thickness K31 is between 0.1 and 0.3 mm, for example, it can be 0.15 mm, 0.2 mm, 0.25 mm, etc.

[0195] By providing the elastic sheet 301 to provide an elastic acting force, the clamping and wearing of the earphone 1 are realized. By reasonably setting the ratio of the width to the thickness, while ensuring that the ear hook 300 has sufficient strength, the requirement of the elastic acting force is satisfied, so that the earphone 1 has both wearing comfort and wearing stability. In addition, reasonably setting the width and thickness of the elastic sheet 301 can reduce the torque received by the elastic sheet 301, prevent torsion, and also make the change of the provided elastic acting force more linear, effectively improving the wearing comfort. The elastic sheet 301 can be, for example, a titanium sheet, and its exterior is coated with a flexible material, such as silicone, rubber, elastic resin, polyurethane material, polydimethylsiloxane, PVC, TPE and other materials, to improve the wearing comfort.

[0196] Optionally, the earphone 1 further includes a flexible printed circuit board (FPC). Among them, the flexible printed circuit board is arranged along the length direction of the elastic sheet 301 and is disposed on the elastic sheet 301, based on which the wiring difficulty on the earphone 1 can be effectively reduced. For example, the FPC can extend approximately along the upper surface or the lower surface of the elastic sheet 301. Plug-in blocks 2332 can be provided at both ends of the elastic sheet 301, and the plug-in blocks 2332 at both ends can be respectively plugged and connected to the sound generating part 100 and the abutting part 400. The elastic sheet 301 is provided with a notch 2330 that penetrates to the side edge of the elastic sheet 301 in the width direction at a position close to the plug-in block 2332. This notch 2330 facilitates sealing and makes the injection molding effect better.

[0197] Optionally, as Figure 35 shown, the earphone 1 has a reference cross-section SF. The reference cross-section is arranged along the length direction of the ear hook 300. Among them, in the wearing state, the reference cross-section is nearly parallel to the human horizontal plane. In the reference cross-section, the ear hook 300, the sound generating part 100 and the abutting part 400 have an inner contour, and at least the reference point C, the reference point E and the reference point H are included on the inner contour.

[0198] In the worn state, the reference point C is a reference point located on the inner contour of the earhook 300 and corresponding to the edge of the helix (e.g., the topmost / outermost edge of the helix), and the reference point C can be a turning point of the inner contour. For example, the inner contour 300 is a contour line that protrudes away from the helix E17 as a whole. The radius of curvature of a part of the inner contour 300 in the vicinity of the helix edge gradually increases first, then gradually decreases, and then gradually increases respectively from the reference point C towards the sound generating part 300 and the abutting part 400.

[0199] In some embodiments, in the natural state, there is no abutment between the outer wall surface of the sound generating part 210 and the outer wall surface of 400. There is a position with the shortest distance between the outer wall surface of the sound generating part 100 and the outer wall surface of the abutting part 400, and the midpoint of the line connecting the two positions with the shortest distance is point O. If there is an abutment between the outer wall surface of the sound generating part 210 and the outer wall surface of 400 in the natural state, then the length of the shortest connection line between the outer wall surface of the sound generating part 210 and the outer wall surface of 400 is almost 0. At this time, the reference point O should be the midpoint of the arc formed by the abutting area where the outer wall surface of the sound generating part 210 abuts against the outer wall surface of 400. The reference point C is the reference point in the inner contour that has the largest distance from the point O. The reference point L is the position point on the sound generating part 100 that is closest to the reference point C. The reference point K is the position point on the sound generating part 100 that is farthest from the reference point C.

[0200] Optionally, as Figure 35 shown, a connection line CE is formed between the reference point C and the reference point E, and a connection line CH is formed between the reference point C and the reference point H. In the natural state, the length of the connection line CE is between 16 - 19 mm, the length of the connection line CH is between 6.5 - 9.0 mm, the included angle between the connection line CE and the connection line CH is between 72° - 88°, the inner contour between the reference point C and the reference point E is located outside the connection line CE, and the inner contour between the reference point C and the reference point H is located outside the connection line CH.

[0201] In the experience of wearing and using the earclip - type earphone 1, if the inner contour of the earphone 1 contacts the helix, it will greatly affect the wearing comfort of the earphone 1 and the user experience of the wearer during long - term use.

[0202] Among them, if the angle between the connecting line CE and the connecting line CH is too small, it will cause the inner contour of the earphone 1, especially the inner contour between the reference point C and the reference point E and the inner contour between the reference point C and the reference point H, not to bypass the helix as much as possible. If it is too large, it will increase the overall structural size of the earphone 1 and affect the overall aesthetics of the earphone 1. Therefore, the angle between the connecting line CE and the connecting line CH is set within the range of 72° to 88°, so as to ensure that the inner contour of the earphone 1 can bypass the helix as much as possible, reduce the contact between the inner contour of the earphone 1 and the helix, and thus effectively improve the wearing comfort and aesthetics of the earphone 1. For example, in some embodiments, the angle between the connecting line CE and the connecting line CH can be set to 80°.

[0203] Further, if the length of the connecting line CE is too small, it will cause the sound generating part 100 to not be able to extend into the concha cavity, affecting the sound quality of the earphone 1, or after the sound generating part 100 extends into the concha cavity, the inner contour of the earphone 1, especially the position at the reference point C, contacts the helix. If it is too large, it will increase the overall structural size of the earphone 1 and affect the aesthetics of the earphone 1. Therefore, the length of the connecting line CE is set within the range of 16 to 19 mm, which can ensure that the sound generating part 100 stably extends into the concha cavity while ensuring that the inner contour and the sound generating part 100 do not contact the helix E17, thereby effectively improving the wearing comfort and aesthetics of the earphone 1200, and effectively improving the sound transmission quality of the earphone 1. Further, if the length of the connecting line CH is too small, it will cause the abutting part 400 to contact the helix, and if it is too large, it will increase the overall structural size of the earphone 1 and affect the aesthetics of the earphone 1. Therefore, the length of the connecting line CH is set to 6.5 to 9.0 mm, which can better ensure that the inner contour of the earphone 1 can bypass the helix as much as possible, so as to ensure that the inner contour and the abutting part 400 of the earphone 1 do not contact the helix, thereby effectively improving the wearing comfort of the earphone 1. For example, in some embodiments, the length of the connecting line CE is set to 17.13 mm, and the length of the connecting line CH is set to 7.59 mm.

[0204] Optionally, the arc-chord ratio of the inner contour between the reference point C and the reference point E is between 1.02 and 1.20. Optionally, the arc-chord ratio of the inner contour between the reference point C and the third reference point H is between 1.05 and 1.23.

[0205] Specifically, the arc-chord ratio of the inner contour between the reference point C and the reference point H specifically refers to the ratio of the actual length of the inner contour between the reference point C and the reference point H to the length of the connecting line CE. For example, in some embodiments, the inner contour is a curved arc-shaped curve contour, and the arc ratio of the inner contour between the reference point C and the reference point E is the ratio of the arc length of the inner contour between the reference point C and the reference point E to the length of the connecting line CE. It should be noted that in this embodiment, the inner contour between the reference point C and the reference point E of the inner contour is a continuous arc protruding away from the connecting line CE. In other embodiments, the inner contour may not be set as a curve, and it may also be a multi-segment broken line, etc.

[0206] Among them, if the arc chord ratio of the inner contour between the reference point C and the reference point E is too small, the inner contour between the reference point C and the reference point E will be relatively straight, which is not conducive to the inner contour between the reference point C and the reference point E bypassing the helix. If the arc chord ratio of the inner contour between the reference point C and the reference point E is too large, it will cause the inner contour between the reference point C and the reference point E to be too curved, affecting the overall aesthetics of the earphone 1. Therefore, the arc chord ratio of the inner contour between the reference point C and the reference point E is set within the range of 1.02 to 1.20, so that the inner contour between the reference point C and the reference point E can bypass the helix as much as possible without contacting the helix, thereby effectively improving the wearing comfort of the earphone 1 while effectively improving the aesthetics of the earphone 10. For example, in some embodiments, the arc chord ratio between the reference point C and the reference point E can be set to 1.1.

[0207] Optionally, between the reference point L and the reference point K and on the side facing the abutting portion 400, the arc chord ratio of the outer wall surface of the sound generating portion 100 is between 1.4 and 1.7. Based on this setting, the side of the sound generating portion 100 facing the abutting portion 400 tends to be more spherical. Among them, between the reference point L and the reference point K and on the side facing the abutting portion 400, the outer wall surface of the sound generating portion 100 is a continuous arc surface protruding toward the abutting portion 400. For example, in some embodiments, between the reference point L and the reference point K and on the side facing the abutting portion 400, the arc chord ratio of the outer wall surface of the sound generating portion 100 can be set to 1.64.

[0208] Optionally, a connection line CL is formed between the reference point C and the reference point L, the connection line CL is located between the connection line CE and the connection line CH, the length of the connection line CL is between 13 and 17 mm, and the included angle between the connection line CL and the connection line CE is between 15° and 27°.

[0209] Specifically, the reference point L is a special point on the sound generating portion 100 that is closest to the reference point C. Therefore, the included angle between the connection line CL and the connection line CE determines to a certain extent whether the sound generating portion 100 can be fully placed in the concha cavity, and the length of the connection line CL determines to a certain extent whether the inner contour of the earphone 1 can still not contact the helix when the sound generating portion 100 is fully placed in the concha cavity 1. Therefore, the length of the connection line CL is set between 13 and 17 mm, and the included angle between the connection line CL and the connection line CE is set between 15° and 27°. Based on this, the sound generating portion 100 can be fully placed in the concha cavity without the inner contour contacting or squeezing the helix, thereby effectively improving the wearing comfort of the earphone 1 while effectively improving the sound transmission quality of the earphone 1. For example, in some embodiments, the length of the third connection line is set to 15 mm, and the included angle between the connection line CL and the connection line CE is set to 21°.

[0210] Optionally, a connecting line CK is formed between the reference point C and the reference point K. The connecting line CK is located between the connecting line CE and the connecting line CH. The length of the connecting line CK ranges from 24 to 30 mm, and the angle between the connecting line CK and the connecting line CE ranges from 13° to 25°.

[0211] When the earphone 1 is in a worn state, the reference point K is closest to the ear canal opening. If the reference point K is too close to the ear canal opening, it will block the ear canal opening and affect the user experience. If the reference point K is too far from the ear canal opening, it will affect the sound transmission effect of the earphone 1. Therefore, the length of the connecting line CK is set in the range of 24 to 30 mm, and the angle between the connecting line CK and the connecting line CE is set in the range of 13° to 25°. Based on this, when the sound generating part 100 extends into the concha, the area of the sound generating part 100 near the reference point K can maintain a relatively appropriate distance from the ear canal opening, thus effectively preventing the sound generating part 100 from blocking the ear canal opening and effectively improving the sound transmission effect of the earphone 1. For example, in some embodiments, the length of the connecting line CK can be set to 27.7 mm, and the angle between the connecting line CK and the connecting line CE can be set to 20°.

[0212] Optionally, as Figure 35 shown, along the inner contour, there is an arc segment T1T2 between two points on both sides of the reference point C and 6 mm away from the reference point C respectively. The arc-chord ratio of the arc segment T1T2 ranges from 1.03 to 1.10. Such a setting can effectively reduce stress concentration, effectively improve the service life and reliability of the earhook 300, and is beneficial to ensuring the wearing stability of the earphone 300.

[0213] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A headset, characterized in that: The earphone comprises a sound-emitting part, an abutting part and an ear hook, wherein the ear hook connects the sound-emitting part and the abutting part, the sound-emitting part is used to convert an electrical signal into an acoustic signal and play the acoustic signal, a battery is arranged in the abutting part, in a wearing state, the sound-emitting part and the abutting part form a clamping state on both sides of the user's auricle, and the sound-emitting part is located in the concha cavity, the sound-emitting part comprises a first shell and a sound-emitting component, which are used to form a first accommodating cavity, the sound-emitting component is arranged in the first accommodating cavity, a sound outlet hole is arranged on the first shell, and the sound generated by the sound-emitting component is output through the sound outlet hole, the sound outlet hole is arranged in a strip shape, and has a first end and a second end arranged at intervals along the length direction of the sound outlet hole, in the wearing state, the first end is arranged toward the ear hole, and the distance between the outer wall surface of the first shell at the second end and the inner wall surface of the concha cavity is smaller than the distance between the outer wall surface of the first shell at the first end and the inner wall surface of the concha cavity.

2. The earphone according to claim 1, characterized in that At the second end and / or at a side of the second end away from the first end, the outer wall surface of the first shell and the inner wall surface of the concha cavity are in contact with each other.

3. The earphone according to claim 2, characterized in that The outer wall surface of the first shell is arranged so that the long side hole of the sound outlet is arranged in an arc shape, and the distance between the outer wall surface of the first shell and the inner wall surface of the concha cavity gradually increases in the direction from the second end to the first end.

4. The earphone according to claim 2, characterized in that The arc-to-chord ratio of the long side hole edge of the sound outlet hole is between 1.05 and 1.4 (1.06), or greater than or equal to 1.02 and less than 1.

05.

5. The earphone according to claim 3, characterized in that: The width-to-length ratio of the sound outlet hole is between 0.15 and 0.

30.

6. The earphone according to claim 3, characterized in that: The length of the sound outlet hole is between 9 and 16.5 mm (7), or greater than or equal to 5 mm and less than 9 mm.

7. The earphone according to claim 3, characterized in that: When the sound-emitting part and the abutting part are placed on a horizontal reference plane at the same time, the long side hole of the sound outlet hole forms a first reference point with the horizontal reference plane between the first end and the second end, the second end is located on the side of the first reference point toward the abutting part, and the first end is located on the side of the first reference point away from the abutting part.

8. The earphone according to claim 7, characterized in that: The length of the long side hole of the sound outlet hole between the first end and the first reference point is between 2 and 5.5 mm, and the length of the long side hole of the sound outlet hole between the second end and the first reference point is between 4.5 and 8 mm.

9. The earphone according to claim 8, characterized in that The arc-chord ratio of the long side hole of the sound outlet hole between the first end and the first reference point is between 1.02 and 1.05 (1.01), or is greater than or equal to 1.001 and less than 1.02; the arc-chord ratio of the long side hole of the sound outlet hole between the second end and the first reference point is between 1.02 and 1.05 (1.04), or is greater than 1.05 and less than or equal to 1.

07.

10. The earphone according to claim 8, characterized in that The long side hole edge of the sound outlet hole has a first normal direction at the first reference point, the long side hole edge of the sound outlet hole has a second normal direction at the first end, and the long side hole edge of the sound outlet hole has a third normal direction at the second end, and the angle between the first normal direction and the second normal direction is between 30° and 42° (26), or greater than or equal to 15° and less than 30°; the angle between the first normal direction and the third normal direction is between 50° and 60° (41), or greater than or equal to 25° and less than 50°.

11. The earphone according to claim 3, characterized in that The sound outlet has a median line arranged along its length direction, the sound outlet intersects with a reference section arranged along the length direction of the ear hook, and the angle between the plane where the median line is located and the reference section is between 0 and 45 degrees, and the sound outlet is biased toward the earlobe.

12. The earphone according to claim 11, characterized in that The plane where the midline is located coincides with the reference cross section; or, the sound outlet hole is mirror-symmetrical with respect to the reference cross section.

13. The earphone according to claim 11 or 12, characterized in that: On the reference cross-section, the sound-emitting portion has a second reference point closest to the abutting portion, and the inner contour of the ear hook in the worn state has a third reference point farthest from the second reference point in an area close to the edge of the auricle, and the sound outlet is located on the side of the second reference point farthest from the third reference point, and on the outer wall surface of the sound-emitting portion, the distance from the second end to the second reference point is between 2.2 and 4.2 mm, and the distance from the first end to the second reference point is between 9 and 12.4 mm.

14. The earphone according to claim 11 or 12, characterized in that: The sound-emitting portion is further provided with a pressure relief hole, the pressure relief hole is arranged toward the auricle, and the pressure relief hole is arranged to intersect with the reference section or the pressure relief hole is mirror-symmetrical with respect to the reference section.

15. The earphone according to claim 14, characterized in that The pressure relief hole and the sound outlet hole are separated from each other by a contact area between the sound emitting portion and the cavum concha.

16. The earphone according to claim 15, characterized in that The number of the pressure relief hole is one and they are arranged in a strip shape. The reference cross section is arranged along the width direction of the pressure relief hole and intersects with the pressure relief hole.

17. The earphone according to claim 15, characterized in that The number of the pressure relief holes is two, which are respectively arranged on both sides of the reference cross section and are mirror-symmetrical with respect to the reference cross section. The reference cross section is arranged along the width direction of the pressure relief holes.

18. The earphone according to claim 15, characterized in that The pressure relief hole includes a first hole portion and a second hole portion along the length direction of the pressure relief hole, and a third hole portion connected between the first hole portion and the second hole portion, wherein the width of at least some positions of the first hole portion and the second hole portion is greater than the width of the third hole portion.

19. The earphone according to claim 15 or 17, characterized in that: The sound-generating component is provided with a sound-introducing hole connected to the pressure relief hole through the first accommodating space, and the distance between the sound-introducing hole and the pressure relief hole is no greater than 0.5 mm, or greater than 0.5 mm and less than or equal to 4 mm.

20. The earphone according to claim 11 or 12, characterized in that: The earphone further includes a microphone, and the first shell is provided with a sound inlet hole for guiding external sound to the microphone, and the sound inlet hole is arranged to intersect with the reference cross section.

21. The earphone according to claim 1, characterized in that The sound-emitting component includes two speakers, each of which includes a diaphragm. The two speakers are assembled and matched with each other along the axial direction to form a first acoustic cavity between the two speakers. The sound-emitting component is provided with a first sound-introducing hole connecting the sound outlet hole and the first acoustic cavity. The sound outlet hole and the first sound-introducing hole are connected to each other along the radial direction of the sound-emitting component. The first sound-introducing hole is further arranged in a strip shape, and the length directions of the sound outlet hole and the first sound-introducing hole are arranged along the circumference of the sound-emitting component.

Images